In a recent article by neL, it seems NBK is going back to CS. Its a shame he won't play in Valorant as I think he could have made a deep impact on the EU scene. If he played, NBK would have been by far the most accomplished player to switch. He is pretty much the only CS player to switch who played at the highest level for more than a couple years for teams who were legitimate tournament contenders, and he has more trophies than pretty much everyone. Only Happy and Ska have CS major titles, and they haven't played top level CS in years.
If you consider his CS individual performance to other CS pros who have done well in Valorant, he is among the best despite his age and decline. Players like Mixwell, ScreaM, TenZ, etc who were some of the best performers never stuck at the tier 1 level of CS for that long. Plenty of tier 2-3 players who were never heard of in CS have had huge successes in Valorant such as most of Gambit and the British players on FNC/TL.
NBK's value also is his experience and supportive play style. Every team he has been on has been far more successful with him even if their lineups before/after had more firepower. Even recently, OG have never reached the same world ranking despite having clearly upgraded firepower, Double pony have fallen into irrelevance, and Vitality have struggled with consistency. He isn't a star player but I could definitely see him being a 210-250 ACS sentinel who elevates the play of his teammates.
I would have liked to see him in BDS/Vitality or even a mixed european team like TL, G2, or ACE.
A shame the kingmaker will crown no kings in Valorant.