The ex-Newcastle United man is looking for another club after injury ruined his time at Brunton Park last season.
Dummett joined United in the January transfer window but only managed three appearances.
A hamstring injury just minutes into his debut at Fleetwood Town curtailed most of his campaign, with Dummett returning to make two substitute outings late in 2024/25.
The Wales international, 33, is now training at the Professional Footballers’ Association pre-season camp as he prepares for his next move.
Speaking to Sky Sports at the training camp in Leicestershire, Dummett said: “When I left Newcastle, I didn't think I would have been out without a club when the transfer window closed.
"It was a difficult time, an uncertain time for me. Newcastle helped me a lot. I left there and didn't have a club, but I was fortunate enough to be allowed to train with the U21s.
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"That helped me stay fit, so I was in a decent position when I went to Wigan. I wasn't match fit, which was not ideal, but I was still in an OK position after training most days.
Dummett only managed three Carlisle appearancesDummett only managed three Carlisle appearances (Image: Richard Parkes)
"The most difficult part at Wigan was that the team wasn't until two hours before kick-off. I never got the opportunity to try and work as hard as I could on a Thursday and Friday if I knew I wasn't going to be playing. I found myself not getting in the rhythm of trying to get fitter and fitter and playing some games.
"In the end, I didn't play much and ended up going to Carlisle in January, then pulling my hamstring the first game I was there.
"It was a bit of a disaster season for me, really."
Dummett feels training with the PFA will help put himself “in the shop window” for another move.
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“I'm sure I can still go out there and be good enough to play. I'm excited for that new challenge and the next chapter of my career,” he added.
Dummett was released by United at the end of last season. Two other players who were also let go by the Blues, Sam Lavelle and Dylan McGeouch, have also been on the PFA’s pre-season camp, and played in a friendly against Worksop Town on Tuesday.
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