Assuming he will very much be the back up to Burge. Dont get me wrong as a number 2 it seems ok enough, back up goalkeeper is not something you want to spend a lot of budget on. That being said my overriding memory of Tzanev was our win at Wimbledon 2 seasons ago when the ball dribbled past him at 2mph innocuously.
Hopefully that was just a one off though, welcome aboard Nik.
On the other hand he saved a last minute Hoskins penalty in the match at Wimbledon during Covid when fans were not allowed in the ground. I think it was the first penalty Sam missed and would have given us a 1-1 draw had he scored.