Reports claim that Celtic are still in talks with the 17-year old midfielder Kristoffer Ajer over a January move.
The Norwegian youngster recently completed a trial period at Celtic, in which he is thought to have impressed his countryman Ronny Deila.
Having made his debut for the Tippeligaen side Start in 2014, the 6ft 5" Ajer has scored 13 goals in 34 games, with 12 of those goals coming from his 21 appearances in 2015.
Incredibly, Ajer captained Start aged just 16, making him the youngest player to wear the armband in the history of the Norwegian top flight. Watch him in action below.