Borussia Dortmund are reportedly keen on signing Fulham’s teenage winger Kerim Frei.

Reports from Turkey claim that the Champions’ League finalists have been tracking the 19 year-old winger’s progress and could rival Galatasaray as potential suitors for Frei. The Turkish international struggled for both form and fitness during a frustrating season as he failed to reproduce the sparkling form of his first campaign in the Fulham first team, when he burst into the side following an eye-catching debut in the League Cup at Stamford Bridge.

Frei, whose season never really got going after he featured fleetingly during a loan spell with promoted Cardiff City that was designed to help him recover from a pelvic problem, has recently told Fulham’s official website that he wants to put a disappointing year behind him. The teenager, who was an unused substitute during Turkey’s 2-0 defeat by Slovenia on Friday night, is now hoping to make a positive impression during pre-season training and hopes to win his first-team place back. That will be easier said than done given the way Alex Kacaniklic finished the season and with the likes of Damien Duff and Ashkan Dejagah, who also enjoyed a fine spell in the side prior to his season-ending injury against QPR, offering stern competition for places.

Fulham have so far steadfastly resisted the temptation to sell Frei, having already rejected an enquiry from Galatasaray last year. Fatih Terim has made no secret of his desire to sign Frei, recently admitting that he has been receiving regular reports on the player’s progress for a year, but – with the winger having two years to run on his contract at Craven Cottage – they would have to substantially improve their initial offer.