Sunderland have so far done well not to lose any of their key players. The Sunderland first-team squad is one full of exciting young talent, and the Premier League has taken notice this summer. Sporting director Kristjaan Speakman has proved divisive among Sunderland fans at times, but he deserves praise for putting together what is a very valuable set of players right now. The likes of Jack Clarke, Jobe Bellingham, Anthony Patterson, Dan Ballard, Dan Neil, Chris Rigg, and Pierre Ekwah have all had links to the Premier League or to top flight European sides this summer. Sunderland though are y…