The Italy striker, who has been the subject of an accepted £14million bid from Sunderland, was hurt in the ninth minute of Liverpool's 1-0 defeat to Roma at Fenway Park following a collision with Seydou Keita and immediately received treatment on the touchline.
"It's not as bad as first thought," said manager Brendan Rodgers, speaking after the game.
'He has only bruised it. He will miss a few days. He won't train for the rest of the trip but it won't be anything serious and he will be okay.
"As for his future, we will see. We have had a significant bid from a Premier League club and it is something he is thinking about."
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