The Leamington-born stopper is at home in the Midlands and does not regret leaving Old Trafford to further his career two and a half years ago.
"I definitely don't regret anything in my career," said Foster to the Albion website.
"I'm a Midlands person, I'm back at home and I've never been happier.
"I never once regret what I've done in the past - everything happens for a reason. You learn from it and it makes you a stronger person on a football pitch. I learned that at a club like United it's very cut throat, succeed-at-all costs, you come away from it as a stronger person.
"I'm too laid back - I don't take this football thing as a 24/7 pursuit. I love playing it, I love Saturdays but it's not the be-all and end-all."