Republic of Ireland Under-21 captain Jayson Molumby has signed a new three-and a-half-year contract with Brighton and Hove Albion that will keep him at the Premier League club until the summer of 2023.

Molumby went on loan to Millwall at the start of the season and has flourished at the Championship side. The Lions are tenth in the table, five points off the play-off places.

Molumby has been central to their campaign, forming a formidable midfield partnership with another Irishman, Shaun Williams.

The 20-year-old Waterford man has also excelled for Stephen Kenny's Under-21s, though senior boss Mick McCarthy appeared to rule out calling him for the Euro 2020 play-off semi-final against Slovakia later this month when he described that clash as "a game for hard-nosed pros".

Still, the future looks bright for Molumby, who will remain at Millwall until the end of this season.

"The experiences Jayson has had in the tough environment of the Championship this season have really helped his overall game and we're delighted that he is committing himself to the club so he can continue his development when he comes back to us at the end of the season," said Brighton Technical Director Dan Ashworth.

"We've watched Jayson regularly this season and I know how pleased everyone at Millwall has been with his performances and his attitude.

"The new contract is a reward for his professionalism and hard work and I’m sure he will be looking to make a big impact when he comes back to the club."