Wilson says he can't explain why it didn't work out for him at United.
He told the the Daily Mail: "I'm not sure. I came in every day trying my best but sometimes it just doesn't work out. That's football.
"It's a tough game and a tough industry. I think for me it was about taking it as well as possible. If this isn't going to happen, what else can I do?
"Is there something to fall back on? Whether that be inside of football or outside of football. I have thought of things that I can do after my career has finished as well.
"I thought doing that was good for me, especially not being under contract for the first time.
"I think it was a bit of a turning point. I could have packed it in if I wanted to, but I don't want to because I love the game. I could easily have gone into something else, but that is not what I wanted to do at this point.
"It was never in the back of my mind — well, it must have been because I'm telling you that now, but it wasn't something I considered."
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