He played for England at youth level, but his grandmother(?) is Welsh and apparently he regards himself as Welsh because of this so chose to play for them.
Strange decision imo - but maybe he's close to his gran or something.
As for playing badly last season - first 2/3 of it he was outstanding, okay he waned as season went on terms of his running etc but he still did a good job with his distribution etc - hopefully though this decision and the signing of Nani, and Eagles emergence, will save his legs a bit and he'll be able to play like he did in the first 2/3 all season.