Hull midfielder Robert Snodgrass has been ruled out for six months with a dislocated kneecap.
Tigers manager Steve Bruce revealed the extent of the injury to Snodgrass ahead of the club's Europa League qualifier against Lokeren in Belgium on Thursday, a club spokesman confirmed.
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And it could get worse for Snodgrass who is due to undergo scans to investigate possible ligament damage.
Snodgrass was one of Bruce's big summer signings after his £7million move from Norwich.
The 26-year-old pulled up with a suspected twisted knee in the first half of his side's 1-0 Barclays Premier League win at QPR on Saturday.
Snodgrass wrote on Twitter: "Gutted ....!!! But I will work as hard as I can to come back fitter and stronger."