Millwall have signed former MK Dons goalkeeper David Martin on a short-term deal until January.

Martin, who had been without a club since leaving the Dons in May, was training with the Lions’ arch rivals Charlton over the summer.

The 31-year-old made more than 300 appearances for the Buckinghamshire club during a six-year spell.

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He has Championship experience after impressing in the Dons’ 2015/16 season, which ended in relegation.

Martin will rival Jordan Archer and Tom King for a starting berth at the Den.