Midfielder Bradley Johnson will return from suspension for Leeds.Right-back Paul Connolly remains sidelined with a hamstring problem, while midfielder Lloyd Sam is struggling with a virus. [LNB]Doncaster are assessing the fitness of Billy Sharp, who recently returned to action after a groin problem. [LNB]Jason Euell (knee) may miss out again but James Hayter (calf) could make a timely return, with James Coppinger and Ryan Mason also hoping to feature. [LNB][LNB] MATCH PREVIEW Sixth-placed Leeds are looking for their first win in four games and have conceded a total of eight goals in their last three outings, but they are strong at Elland Road.[LNB] [LNB][LNB] Leeds are unbeaten in 11 home matches and remain the division's top scorers, having netted 62 of the whopping 117 goals their league matches this season have produced. That could be a worrying sign for Doncaster, who have conceded more Championship goals in 2011 than any other team. [LNB]Injury-hit Rovers have let in 25 since the turn of the year and this season have managed one clean sheet away from home, and one away win against a team outside of the bottom six. [LNB]But Doncaster head into this Yorkshire buoyed by an excellent 3-1 win at fellow strugglers Derby in midweek, which was their first victory in seven matches and eased their relegation fears. [LNB][LNB] MATCH FACTS Head-to-head[LNB]• Leeds have won seven and Doncaster four of the 18 previous matches between these clubs. [LNB]Leeds[LNB]• United have taken an unrivalled 13 points from matches in which they have conceded more than one goal. [LNB]• They have failed to score in only four league games this season. [LNB]• George McCartney is in line for his 300th club career appearance. [LNB]Doncaster[LNB]• Doncaster are are one of three clubs not to have scored more than three goals in a Championship match this season. [LNB]• Striker Billy Sharp is one goal away from his 100th in the league. [LNB]• Franck Moussa could make his 100th career start.