Paul Merson has lauded a player who has been heavily linked with a switch to Tottenham Hotspur ahead of the summer. Tottenham endured a miserable afternoon at St James’ Park on Saturday as they suffered a 4-0 defeat. It was the heaviest defeat of the Ange Postecoglou era so far and indicated the Aussie still has plenty of work to do in north London. With Spurs still firmly in the mix for a top-four finish, the summer transfer window already feels vital for Postecoglou. Tottenham have made some astute signings since the Aussie’s arrival, with Guglielmo Vicario, Micky van de Ven and James Maddis…