The Danish striker's future at Feyenoord has been uncertain, with Tengstedt struggling to establish himself in the team. He has made 23 appearances for the Rotterdam club, scoring five goals, but has often been limited to substitute appearances.

Feyenoord signed Tengstedt from Benfica last summer, tying him down to a contract until mid-2029. However, the arrival of Ayase Ueda and Nacho Ferri has further reduced Tengstedt's opportunities. VoetbalPrimeur reports that Tengstedt is now on the verge of a move to Toulouse, with the two clubs having already agreed on the transfer. A medical examination is the only remaining hurdle before Tengstedt can complete his move to France.