The Bhoys boss Neil Lennon travelled to Holland to watch the player in action as the Frisians faced AZ Alkmaar in the KNVB Beker on on Wednesday.
This is enough to suggest that Celtic are seriously considering a January bid for the Icelandic forward, but they are likely to face a stiff competition for the player’s signature.
Namely, Premier League sides West Ham, Newcastle and Cardiff City are all believed to be keen on the 24-year-old footballer.
Finnbogason is valued at £5 million and he has been in stunning form this season, notching 16 goals in 14 Eredivisie appearances.
The Iceland international has become one of the most-sought after forwards in Europe and everything suggests he will be leaving Heerenveen in the near future.
Finnbogason hasn’t quite managed to prove his worth on international stage, having scored just 4 goals in 20 appearances for Iceland.