Manchester United centre back Harry Maguire is bidding to win back his place next season.
The club captain was out of favor with Erik ten Hag last season, with Raphael Varane and Lisandro Martinez first choice.
At one stage of the season, Maguire was fifth choice center back with Victor Lindelof and Luke Shaw ahead of him in the pecking order.
Per Fabrizio Romano, Maguire has been training individually with former Chelsea defender Ricardo Carvalho.
The ex-centre half would know about succeeding at a top club in the Premier League.
Maguire has been training three times a week for the past three weeks.