Martin, 22, had a trial with the Alex in the summer, only to subsequently be released by former Crewe boss Gudjon Thordarson.

BBC: Martin to follow Beckford example

Bowler is keen for the players to put past disappointments behind them, and remains confident that his manager Gudjon Thordarson is the man to achieve it.

BBC: Crewe chairman wants promotion

Miller was largely ignored under former boss Gudjon Thordarson, scoring once in just three starts under the Icelander this season, but Gradi says he has a key role to play.

BBC: Crewe's Worley out for six weeks