He had loan spells with non-league Barrow and AFC Fylde, before being released in the summer of 2015, having made five appearances and scoring once.

Following Southport's relegation in the 2016–17 season, Allen joined National League side Dover Athletic for an undisclosed fee.

[3] Allen made his debut for the club on 5 August 2017, in an opening day 1–0 away victory over Hartlepool United in which he scored the game's only goal.

[7][8] On 29 August 2022, Allen signed for National League North club AFC Telford United on a one-year deal.

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