Complex sentence: Allan moved to Celtic in May 1897 where he carried on his goalscoring exploits hitting 15 goals in 17 games helping the Parkhead club win the Scottish First Division, he returned to Anfield a year later when new manager Tom Watson re-signed him in April 1898.
Split into simpler sentences: Allan moved to Celtic in May 1897 where he carried on his goalscoring exploits hitting 15 goals in 17 games, helping the club win the Scottish league. He returned to Anfield a year later when new manager Tom Watson re-signed him in April 1898.