The Irish international forward has been in fine form for the Championship outfit this season, and Liverpool boss Kenny Dalglish is thought to have targeted the player as a potential summer addition.
Long, who scored the winner against Liverpool in Reading's 2-1 FA Cup victory at Anfield last season, has 14 goals to his name this term and is the leading score at the Madejski Stadium for Brian McDermott's outfit.
Joe.ie reports that the player is desperate to ply his trade in the Barclays Premier League, although with Reading only six points outside the play-off places that dream could be realised in Berkshire.
Liverpool spent big on strikers in January, with Andy Carroll and Luis Suarez brought into Merseyside to nulify the exit of Spaniard Fernando Torres.
Dalglish has hinted at strengthening in a number of positions in the summer too, and despite the double striker addition it appears another forward could be on the radar for Liverpool.
A left back is thought to be the club's main priority though, and the Liverpool squad is set for a major revamp in the summer.