The figure has been revealed in the Evening Post by Chairman Huw Jenkins who has also confirmed that the Swans have been in discussions with both player and agent over a possible return to the Liberty Stadium next season.
Anderson scored 10 goals in a hugely successful stint at the Liberty last season and Swansea have always remained keen on getting a return for next season.
They face competition from Nottingham Forest for the player with club officials reportedly believing that their close proximity to the player's home town may have been the trump card although others have said that Swansea would remain the preferred choice of Liverpool who know the way he would be looked after from previous experience.
And it seems that Swansea are prepared to shell out to get their man with Jenkins telling the Evening Post We have talked to Paul and his agent
"We would definitely pay a fee to take him on loan, which could be at least £100,000."
Swansea did pay a fee to secure his services last season but not in the realms of that mentioned this time around and the Evening Post reports that Forest's bid for the player is official.
Roberto has said that there could be three or four more arrivals at the club this month and it becomes more and more evident that the Swans would like one of them to be Anderson and it does feel at the moment as if we have every reason to be optimistic on that front.