Jemal Johnson is set to make his Leeds United debut in the relegation battle with QPR tonight.

The 21-year-old, American-born striker signed on a month's loan from Wolves yesterday and while he won't be able to play when Leeds travel to Molyneux on Saturday, he is likely to be on the bench against Rangers in place of the struggling Tresor Kandol.

Ironically, Johnson fell out of favour at Wolves after the arrival of former Leeds striker Andy Keogh, but even though he has only netted three times in 24 appearances for the Midlands club, Leeds boss Dennis Wise thinks he will freshen up his squad.

The now infamous, but still unknown Leeds mole' would have a job to reveal the line-up for tonight's game because even Wise is struggling to know what it will be.

He is waiting for last minute checks on two of his three central defenders. Rui Marques is doubtful after sustaining a badly gashed head at Cardiff on Saturday.

That leaves Hayden Foxe to partner Matt Heath but the Australian also picked up a knock at Ninian Park and is carrying a long term injury that prevents him playing two games in a week.

Wise is hoping for better news about Alan Thompson, who should be fit to return to midfield and is likely to replace Ian Westlake.

Victory over a QPR side, whose manager John Gregory is expected to get the sack if they lose, will lift Leeds off the bottom whatever the result in the other massive relegation struggle between Barnsley and Hull.

Defeat, on the other hand, would be a massive blow, from which Leeds might not recover.