It was more than an "unpleasant shoulder issue". He needed invasive surgery on it and he was out for five months. The same thing basically saw Alvaro Negredo off and, as far as I can remember, he didn't need surgery. He scored 23 goals in 35 games between August and January in the 13/14 season but after that shoulder/back injury he picked up against West Ham in the cup it took him another two-and-a-half years (and over 100 more games) to score another 23 goals. And if Phillips' injury was even half as bad then you can see why his form and fitness have both gone off a cliff.