Arsenal have signed Kai Havertz from Chelsea on a "long-term contract" and have reportedly moved closer to sealing a deal for West Ham captain Declan Rice.
Havertz joins on a five-year contract for a reported £65m (€75m) after three years with the Blues, during which he made 139 appearances, scoring 32 goals, including the winner in the 2021 Champions League final.
The news regarding the 24-year-old Germany international comes as it was reported that Arsenal had also agreed a £105m (€116m) fee with West Ham for Rice.
Havertz said on Arsenal's official website: "It’s super exciting for me to be joining this amazing club and to be part of the Arsenal family. This club has such a big history, and I hope we can achieve lots of things.
"The mentality in the Arsenal squad is very high and you can feel that. That was one of the reasons why it has been so hard to play against Arsenal recently.
"The aim is to win trophies and I’m going to give everything to do that for the supporters and everyone at the club. I’m now looking forward to meeting all the players and the staff when we come back for pre-season."

Manchester City have ended their interest in Declan Rice after Arsenal made an improved offer for the West Ham captain.
The Gunners made their latest offer for the 24-year-old England international on Tuesday after two previous approaches were rebuffed by the Hammers.
It was also reported City had a bid totalling €104m knocked back and the treble winners have now decided not to match or try to better Arsenal's proposition.
It is believed the Gunners have offered €109m and a further €7m in potential add-ons. It would make Rice the most expensive British player of all time and eclipses Arsenal's previous record transfer.
It is understood West Ham are unhappy with the payment structure put forward but, rather than dismiss the offer out of hand, are now looking to negotiate.
Meanwhile, a move for Ajax full-back Jurrien Timber is still being worked on as Arsenal aim to improve a squad that finished second last season.
Tottenham have completed the signing of James Maddison from Leicester.
Spurs entered advanced talks with the recently relegated Foxes earlier this week and have secured the services of the England international in a deal worth £40m (€46m) plus add-ons.
Maddison has agreed a five-year deal with the club and becomes new boss Ange Postecoglou's third arrival of the summer.
The transfer of Maddison will represent a major coup for Spurs, who have been long-term admirers of the 26-year-old.
Ex-Tottenham boss David Pleat recommended Maddison to chairman Daniel Levy when the playmaker was still a teenager at Coventry, but no move was able to materialise and he instead joined Norwich.
Spurs' interest and desire to eventually sign Maddison never waned with his time at Leicester only serving to highlight he was one of the most creative players in England.
During five largely successful years with the Foxes, who won the 2021 FA Cup, Maddison made 203 appearances, scored 55 goals and produced 41 assists.
While Maddison was unable to prevent Leicester suffering a shock relegation to the Sky Bet Championship last season, he was still able to hit double figures for goals.
Leicester’s battle for survival saw them turn down advances for Maddison in the January transfer window but they have now agreed for him to depart.
Newcastle had registered an interest in bringing the midfielder to St James’ Park but decided to pursue a move for AC Milan’s Sandro Tonali, which left the door open for Tottenham to swoop in for their key target.
Maddison’s creativity and versatility will boost a Spurs squad that has lacked a player in his mould since Christian Eriksen left in 2020.
His arrival completes a busy couple of weeks for Tottenham, who made Dejan Kulusevski’s loan switch from Juventus permanent and signed Empoli goalkeeper Guglielmo Vicario.
Speculation over the future of vice-captain Harry Kane continues, with Bayern Munich reportedly ready to submit a bid for Tottenham’s record goal-scorer.
Kane is approaching the final 12 months of his contract, but it is believed that Spurs have no intention of selling the forward this summer.

Edouard Mendy has become the third player to leave Chelsea for Saudi Arabia this summer after the club confirmed he has joined Al-Ahli.
A fee of £16m is understood to have been agreed for the goalkeeper, who lost his place in the team to Kepa Arrizabalaga during the second half of last season.
The 31-year-old had risen to become one of the most highly-rated keepers in the world after helping Chelsea to win the Champions League in 2021, but played only once for the club after returning from the World Cup in Qatar, costing his side a goal after a mistake in a 2-2 draw with Nottingham Forest in May.
It is understood that new manager Mauricio Pochettino decided weeks ago that Arrizabalaga would be his first choice to start next season in goal, rendering Senegal international Mendy surplus.
He joins N'Golo Kante and Kalidou Koulibaly in having swapped Stamford Bridge for clubs in the Saudi Professional League, with the pair having joined Al-Ittihad and Al-Hilal respectively.
Another Chelsea outcast, Hakim Ziyech, is understood to be on the brink of moving to the Gulf state after a deal was struck for him to join Al-Nassr, where Cristiano Ronaldo also plays.
The club are eager to clear as many of their unwanted players out as possible before 30 June so that the sales can be included in financial accounts for 2022/23.
Havertz move to Arsenal came after Mateo Kovacic joined champions Manchester City on Tuesday. Ruben Loftus-Cheek has agreed a £15m move to AC Milan.
A £55m bid from Manchester United to sign Mason Mount remains on the table after the England international told Chelsea he wants to leave, but on Wednesday the clubs remained apart in their valuation of the player.

Liverpool forward Fabio Carvalho is set to complete a loan move to RB Leipzig but the prospect of midfielder Dominik Szoboszlai swiftly moving in the opposite direction is currently unlikely.
The Bundesliga club have been pursuing Carvalho for some time and it is understood they initially wanted an option to buy permanently.
However, Jurgen Klopp was not prepared to countenance that but he does want the 20-year-old to gain more first-team experience after he made just 21 appearances, most of them as substitute, in his first season after joining from Fulham.
Completely separate to the Carvalho deal, it's understood Liverpool have had a meeting with Hungary international Szoboszlai's representatives but as yet he remains one of many options Klopp is hoping to bring in to reinforce his midfield.
It is understood the 22-year-old has a buyout clause in the region of €70m which expires on Friday but Liverpool have not made any move in relation to that, although that does not rule out them subsequently trying to negotiate a lower fee with Leipzig.