I'm not a big fan of Berisha, clearly technically gifted and a hard worker, but despite the nice touches and turns he doesn't really dominate games that much, imo.
From the previous posts regarding players from Tippeligaen, I'm surprised Bjorn Bergman Sigurdasson isn't mentioned. 21 year old Icelandic striker, powerful goalgetter type with insane acceleration. Best striker in the league.
Also, being a Tromso supporter, I would mention Ruben Y Jenssen, Kara Mbodji, and Saliou Ciss (last two Senegalese).
Y Jenssen, although a bit older at 24, is preferred in the national side ahead of the likes of Henriksen and Wolff Eikrem. Miles better than Henriksen, and edges it vs Eikrem if you ask me. Dominating player and a major reason Tromso was second behind Molde last year and are looking strong this year as well.
If you fancy more detail, I would advise you to consult Football Manager