The French midfielder left the pitch after 19 minutes.
“We’ve done well because we were without Sol Campbell and Niko Kranjcar and then lost Diarra, although it was an entire accident,” Adams said after the game.
“The big shame is that we’ve got to send Lassana over to France for their friendly international next week.
“We are not allowed to pull him out but hopefully the French doctors will see the extent of the injury.
“I’m not happy he’s got to get on a plane with it, though.”
