Yep a little patience is needed but judging how quickly he brings players in and they adapt to his style I don't think he needs that much time to bed in. They sold practically their entire defence at the start of the season, I think only Sensei is left, yet yesterday they looked pretty solid defending against "Set Piece FC." He lost Semenyo in January but seems to have found these 2 stars in Croupier and Rayan who've replaced him almost seamlessly. A couple of seasons ago they lost their top scorer and replaced him in a heartbeat.
For me the biggest challenge he will face at Spurs is that our recruitment team is not remotely as good as Bournemouth's
He might need a season to recalibrate but tbh the way we have been playing in the League over the last 2 seasons compared to Europe, European football is the least of our worries. I think he knows the PL well enough to overcome that issue. And as
@Bedfordspurs says, he has managed in Europe too which is a good starting point. I think this guy is Poch-esque without actually being Poch.