Conte yesterday:
"There is the new player Spence. He is a guy who has to work a lot, because to go into Tottenham it's different in the Premier League with Tottenham but in the end I'm happy."
What to make of that?
I think the positive reading is that he's pleased with Spence's potential, having seen him up close, but he wants him to improve his tactical level before he's ready to play.
One criticism of Spence last year was that he was caught out of position a fair bit, relied a lot on recovery pace and the RCB behind him. So, for sure, Conte is working on that, and saying to Spence that now you are at Spurs you have to take on board what I ask or you won't play (whereas at Forest you got away with your tactical weaknesses because they didn't have any other decent RWBs).
The 'in the end I'm happy' is the key for me though, because I think it suggests he does rate Spence and thinks he can turn him into a useful player for us.