Complex sentence: He was deposed as centre back for a while by Roger Hynd but after playing in midfield for much of the 1969-70 season he won his place back when Hynd was temporarily switched to the forward line.
Split into simpler sentences: He was deposed as centre back for a while by Roger Hynd. But after playing in midfield for much of the 1969-70 season he won his place back when Hynd was temporarily switched to the forward line.