Yeah, I’m not sure why they have decided to bring Werner in. I guess it’s on loan so essentially risk free.
Son is at the Asian Cup too so they will need somebody to step up in his absence. I am doubtful Werner will come close to replicating the influence Son has.
In Werner's video interview on the Tottenham YouTube channel, Werner is very optimistic about returning to the Premier League with Spurs, who is said to be a big club. He believes in this team with the greatness that Tottenham has, including the stadium problem.
Werner at RB Leipzig has not played much this season. Only 8 games and two starts.
I doubt Werner can emulate Son's influence at Spurs. Maybe Werner can prove it on loan, as he said in an interview, so that the Tottenham public will fall in love with him.