Manchester United manager Ole Gunnar Solskjaer admits his side have to get better if they are to make the progress which will bring trophies and he acknowledged that is likely to mean making signings.
Speaking after the loss to Sevilla in the semi-final of the Europa League, the Norweigan said: "Since February we have been fantastic but then again it is disappointing to go out.
"We have come quite a distance from where we were in February and it is exciting to work with these boys.
"But you see how tired they were at the end, tired legs and tired minds. We definitely need to improve if we want to move up the table and take steps further in the cups.
"We are working to improve what we have. It is not about marquee signings it is about quality.
"When you are going to sign a player you need to have the right player and right personality to fit into the group and make us better. We might look at it today and see where we need to improve it as well."
Harry Maguire admitted only reaching the semi-finals is unacceptable for United.
Defeat to Sevilla was their third failure at the penultimate stage of a cup competition after late exits in the Carabao and FA Cups.
"We deserved to go through but ultimately we fell short at the semi-final stage, for the third time this season," he told BT Sport.
"It means a lot to us, the boys are devastated. We have a good group of lads who know what it means to play for this club and losing isn't acceptable. Getting to semi-finals isn't acceptable and we now have to look at taking it another step.
"Maybe that little bit of inexperience cost us in the end. Even when we are on top, creating chances we shouldn't concede that second goal.
"They worked it well down the right, but we have to do better. We conceded from two crosses and it's not good enough."
