Kilmarnock manager Derek McInnes hopes in-form striker Kyle Vassell can dust himself off for their do-or-die showdown with Ross County.

Vassell struck twice in Wednesday’s 3-0 win over Dundee United, which kept Killie in pole position in the race for cinch Premiership survival.

The Ayrshire side will secure their top-flight status for another year if they avoid defeat against Ross County at Rugby Park on Sunday but they face a play-off if they lose.

Vassell, who missed games in recent weeks before hitting three goals in three matches, went off after a heavy challenge from Charlie Mulgrew in the second half on Wednesday.

McInnes said: “He’s not really trained properly since the Hearts game around seven weeks ago. We’re just getting him out there, to be honest.

“He’s been doing a lot of work with the physio, but we don’t want to irritate his knee.

“He did a wee bit of work with us on Tuesday and declared himself fit, as he does. He turns up for his work and he’s prepared to get his hands dirty.

“He’s so important to me and the team. We’re hoping that he’s all right.

“We’re conscious that it usually takes five or six days for it to clear up, we’ve only got three, so we’re up against it. Knowing him as I do, he’ll be willing to put himself out there.”