One Sunderland star looks set to really test the resolve of Kristjaan Speakman and the club ahead of the summer. Sunderland‘s strategy is clear; buy young and cheap, sell for huge profits. And they’re making good headway in that regard with players like Jack Clarke set to pocket the club a huge profit in the summer transfer window. There’s plenty more in the same category; Pierre Ekwah and Dan Ballard to name a couple, with academy men Dan Neil and Anthony Patterson having cost the club nothing, but both now worth, arguably, £10million or more. Sunderland showed last summer in particular that …