The Scottish international emerged through Blackburn’s Academy system but his opportunities were limited and he spent two successful loan spells at Stoke, the first one producing a goal tally of 11 goals from 37 appearances.

Last season, he spent time at Plymouth and again had a decent goal return with 14 goals in his 41 appearances.

Gallagher can operate on either flank but has also expressed a desire to play down the middle as City look to make a successful return to the Championship.

He got off the mark with a goal double against Crystal Palace on October 20.