Man Utd complete €55m deal for Ajax star Lisandro Martinez

Defender is in Old Trafford, working with Lisandro at Ajax  

Lisandro at Ajax to sign a five-year deal with new United boss Erik Ten Hag 

Former Red Devil's defender Jaap Stam recently elaborated  

Martinez would be a good sign for Manchester United this summer.

"I don't know if Martinez is worth 50 million euros.  

"I've become a fan of him. I think he's a great guy  

"Ten Hug's approach is to dominate the game