Liverpool to focus on prising Forlan away from Atletico Madrid
The People says Benitez has also asked about another ex-United striker, Ruud van Nistelrooy.
But Atletico Madrid raider Forlan, 30, is his first choice for a January swoop, although Benitez would have to stump up around £15million.
Forlan is desperate to leave his club, who are struggling near the foot of La Liga and also out of the Champions League.
The Uruguay international was not a resounding success during two years at Old Trafford but since going to Spain has been prolific for Villarreal and Atletico, shooting both clubs into the Champions League.