The Birmingham goalkeeper, 27,who faces his former club atSt Andrew's tonight, could havebeen in line to replace Edwin vander Sar as United's No 1.
But Foster is delighted he madehis £4million move and said: 'Ifeel I'm back to my best. I feelgood and I'm enjoying myfootball.
No regrets: Ben Foster insists he made the right decision leaving Manchester United
'I'm playing week in,week out and I was more thanhappy to come to St Andrew's.
'A club like United is cut-throat.But I'm loving it (here). I don'twish I'd stuck around at OldTrafford at all.'
BIRMINGHAM v Manchester United: Alexander Hleb set for sub role after shaking off hamstring injuryBent set for Birmingham exit after McLeish tells him to find a new clubFergie eyes 25-goal haul from red-hot Berbatov as Man United march on
Explore more:People: Ben Foster Places: Birmingham