Its the right time for him to.
Absolutely love Sonny, I doubt there's a Tottenham Hotspur suppoerter that doesn't but him leaving with a trophy, at a time where his legs are ageing, and with a new manager incoming, along with it being our last opportunity to get serious money from Saudi Arabia it just all leads to a win/ win.
Get good money, leave a genuine legend of the club, on a true high which so few have been able to have done and use it to grow and finally make a sale that is truly beneficial to the club. The last I can remember us making was Wimmer to Stoke for £20m