Southampton striker Danny Ings could be out for up to six weeks as he requires minor surgery on a knee injury.
Ings, 28, was substituted in the 85th minute of their 4-3 Premier League win at Aston Villa on Sunday following a challenge with Trezeguet.
Saints said the initial results of a scan on the England international's left knee were "favourable" on Monday.
But boss Ralph Hasenhuttl said on Wednesday that "it looks like he is out for four to six weeks."
The Austrian added: "He'll have a small surgery on Thursday morning.