Better the players he knows and trusts than throwing £50m at someone who could easily prove to be not worth the money. The Premier League has been littered over the years with overseas stars who weren't worth the money. Spurs learned this lesson the hard way with Roberto Soldado.
The teams that win titles usually do so after a quiet summer transfer-wise. It's unusual to accommodate more than max two new signings into a first 11 without dropping quite a lot of points early on. So Chelsea and Leicester and Arsenal should all start the season better than the Manchester clubs and Liverpool. And as the only side who hasn't changed its starting 11, we have to start well!