I think they were already in the market this won't have come as a surprise to them.
Sounds like they might actually have a bit of turnover this summer there's strong rumours that Danillo, Otamendi & Gundogan were all moving on this summer and they are open to moving Sane on if he won't sign a new deal.
The rumours are they are in talks for Chilwell from Leicester as they are getting fed up with Mendy's lack of fitness.