Manchester United winger di Maria was taken to hospital for X-rays after being caught on the foot by Nani - on loan from United at Sporting Lisbon - during the first-half of Tuesday's friendly international at Old Trafford.

The £59.7m signing carried on playing until he was replaced on the hour mark, although Martino confirmed after the game he had needed to go for a scan.

But he allayed fears di Maria could be looking at a spell on the sidelines, saying: "We don't think it is anything serious. It was quite a tough blow that he took.

"It was a tough knock. It cut the skin a little bit. But we have had a look at it and we are evaluating the situation.

"We are having a look at some X-rays, some images that have been taken but in spite of that we don't think it is too serious."

The Argentina star hopes he will be fit to face Arsenal on Saturday and later wrote on Twitter: "It was just a blow. I hope it does not swell anymore so I can play at the weekend."

Nani, the villain of the piece, later revealed he would be open to restarting his United career when his loan spell in Portugal comes to an end.

"It's great. I'm doing well," Nani said. "I'm trying to do my best. Things are going well and I hope it continues like that."

Then asked if he thought he would return to United, Nani said: "Why not? I went out to play more and get to my best, and it is an opportunity. We will see."