Schalke general manager Horst Heldt is still pursuing Sascha Riether and hopes to complete a deal to sign the Fulham defender.
The Germany international drew plaudits for his performances during a season-long loan at Craven Cottage last season.
Riether’s form saw him earn a permanent switch from Cologne, which was confirmed in May.
However, Schalke offer the 30-year-old full-back the chance of playing in the UEFA Champions League and are intent on bringing Riether back to Germany despite Fulham’s reluctance to discuss a deal.
Heldt told kicker-Sportmagazin: “In the case of Sascha Riether we have not made any progress.
“There will be no imminent deal, but we are keeping tabs on the situation and are still hopeful that we will agree a transfer in the end.”
Riether appeared 35 times for Martin Jol’s side in the Premier League last season, scoring one goal.