The Argentine has already been ruled out of this weekend’s game with Watford and could miss the Arsenal match the following Sunday.
“It’s bad enough that he won’t play on Saturday,” said Platt.
“It’s difficult to assess an injury like that for how long it’s going to be. On Saturday, he will be out. He’ll be doubtful for Arsenal. It’s a hamstring. There are different degrees of hamstring, that’s why you need the 48 hours. We’ll just have to see.
“There will be swelling and bleeding so you need to give it time to settle down. It’s a blow but when you have so many games in a short space of time you run the risk of this.”
