Complex sentence: Surprisingly for such a high-standing player, he was never capped for the full England side, despite plenty of youth and U23 caps; this was primarily because of England manager Sir Alf Ramsey's policy of not using wingers.
Split into simpler sentences: Surprisingly for such a high-standing player, he was never capped for the full England side, despite a great deal of youth and U23 caps. A primary reason for such was because of England manager Sir Alf Ramsey's policy of not using wingers.