Jaap Stam has warned United's two Rs - Rooney and Ronaldo - that they are not safe in Old Trafford.

Jaap Stam, 34, was there when United won the Champions League trophy back in 1999 and has helped United to win several other trophies but later, he was sold to another club.

He said: “The one thing I learned is you are never sure of your place at United. We won the Champions League and the World Club Championship while I was there.

“So I wasn’t happy with the manner and way they conducted themselves. They showed a total lack of normal decency and respect so I had to leave. In retrospect, I heard that they had seemingly done a deal long before that.”

The Dutch defender, who obviously not happy of the way how United has treated him, has publicly criticized Sir Alex Ferguson of several conducts regarding the transfer deal.