Manchester United manager Louis van Gaal has admitted that he is targeting a new defensive midfielder this summer.
The Red Devils are expected to spend up to £150m in preparation for next season, and Van Gaal has said that finding a midfield partner for Michael Carrick is a priority.
He told reporters: "You have seen this season, for example, because Michael Carrick is injured and I don't have another, I have to play with Ander Herrera there. He did it very well, but it is not his speciality.
"I have played Wayne Rooney there also, but it is not his favoured position. I had to do this because I don't have another right-footed holding midfielder like Carrick.
"That is why it is a key role, but I cannot discuss other positions because then I show too much."
United finish their season at relegation-threatened Hull City this afternoon.