Angel di Maria can be as good as Lionel Messi and Cristiano Ronaldo when he’s on top form, team mate Marcos Rojo has claimed.

Both Argentine internationals headed to Old Trafford last summer and, whilst Rojo has mostly lived up to expectations in between injuries, di Maria has gone backwards after an excellent start to life in the Premier League.

His struggles in the Premier League have led to rumours of a move abroad but Rojo is convinced that di Maria will show the form that convinced United to spend £59.7 million on him.

"People forget Di Maria last season was adapting to a new league," the defender told reporters. "They just saw a big transfer fee and maybe didn't think about England being very different from Spain – it's a lot more physical.

"He's one of the best in the world and, on his day, can do things like Messi and Ronaldo. That's the level he's on. I'm sure, this coming season, we will see very special things from him."