Werner is a player who has experience in the Premier League and won the Uefa Champions League. I agree with you that he was kind of unlucky in the Chelsea squad. He kind of returned to his forms after returning back to Leipzig and if he can be provided with chances he might even become the next Harry Kane of Tottenham Hotspurs.
Actually when discussing this player I think that even though the trophies he managed to get with the club he had defended were quite a lot but in terms of contribution he was one of the very weak players.
Werner was previously transformed into a player who could contribute more to one club but slowly it faded and what was felt was of course when he was at Chelsea.
I don't mind the trophies he has because it's the whole team that deserves credit but individually it's clear he's below par and we know that.
2 seasons at Chelsea with a total of 56 appearances he could only score 10 goals and for Leipzig to date he has played 35 times and has only scored 11 goals including 2 goals this season in my opinion there is nothing special about this player.
So there is no need to expect too much because in the end expectations like this will not be able to guarantee him at Tottenham if he cannot change his performance for the better.
I think Ange main goal in recruiting him is to fill the position left by Son, and then Timo will be prioritized as a cover for Son. For the time being, Son is strengthening the national team, so it is hoped that Timo can be Ange solution in rotating players on Tottenham front line.
I agree with you, that there is no need to expect much from Timo, we have seen his performance while strengthening Chelsea, his high price does not match expectations. His statistics in the first half of the season with Leipzig were also not very promising, perhaps it is quite reasonable why Leipzig management agreed to leave him on loan, reportedly Tottenham will include a permanent purchase option at the end of the season.
Apart from all that, there is a possibility that Timo career at Tottenham will improve again, his statistics could change if he can adapt well under Ange tutelage. Let's see how his second period in the Premier League goes this time, in terms of age, Timo is still at his best.