Yeah 40 seems a lot, he will need to turn into a very good player to justify that
I think Cirkin being injured last season worked in our favour as meant there was little interest in him. Spurs have a class LB at the minute so I think they would have only activated the buy back if they could flip him to another team for a profit
I do think Cirkin will make them massively regret that, he is class and should only get better. He has a bit of everything, which you don't often see in modern fullbacks. I really like the lad Davis at Ipswich but defensively he gets caught out a lot (for PL level), which is where Cirkin should have the advantage over him (Davis's crossing is unreal tho, better than Cirkins imo)