Former Manchester United defender Rafael da Silva has warned the club about signing the wrong type of player this summer.
Ole Gunnar Solskjaer is looking to strengthen his side at the end of the season with Borussia Dortmund winger Jadon Sancho viewed as a top target.
United have also been linked with Tottenham forward Harry Kane, who they admire but sources admit the player would be difficult to sign at this moment in time.
The club will be looking to add quality once the transfer market finally opens but Rafael has warned about players potentially only wanting to move for the money.
"Harry Kane is a great goal scorer and Jadon Sancho is very, very good," he told ESPN. "But first of all you have to see the character of the player and see if they really want to do well for United, not just coming for the money. We have made some mistakes but I hope now that we can get back on track. In this Manchester United, I see more of how they played before and I think soon we will be back where we belong.
"I love Ole. I love the person he is and the manager he is. Of course, there is a lot still to do but I think he's doing it the right way. He's a person who loves Manchester United and he's going to do everything to help the club. I saw it when I was with him when he coached me and it is important.
"He's a guy who is going to think about Manchester United first rather than himself. A lot of coaches are never going to do that, they are going to think about them and after about the club."
