Leeds United, West Ham United and Brentford-linked man to become free agent and 'would like' Europe return
Wagner currently plies his trade in the United States with Philadelphia Union, having joined the club from German side Würzburger Kickers in 2019.
According to GianlucaDiMarzio.com, the defender would like a return to Europe.
AS have claimed an agreement has not been reached on a new deal for Wagner, meaning he looks set to become a free agent when his deal expires at the end of the calendar year.
A left-sided wing-back by trade, Wagner has made 165 appearances for Philadelphia Union.
With Junior Firpo out injured, Leeds have used both Sam Byram and Jamie Shackleton as makeshift left-backs this season.
It is a role Pascal Struijk has also been used in previously, although the Dutchman has been deployed as a centre-back under Farke.