Gary Neville says it will be "very difficult" for him to get back into coaching because he has so many other commitments.
The former Man United defender was dismissed by Valencia after 16 matches in charge last season when he could only guide them to three victories in that period.
Along with some of his former United team-mate, Neville is a part-owner of Northern Premier League side Salford City, while he also has various other interests in the hospitality industry.
Speaking to Sky Sports, he said:
I always say 'never say never' because my love of football is too great, but I genuinely believe it will be very difficult for me to go back into coaching because of my commitment now to so many different things.
It's my obligation to deliver Salford City to the Football League. It's my obligation to roll out Hotel Football internationally.
It's my obligation to deliver high-end restaurants with Michael O'Hare. It's my obligation to deliver St Michael's, which I believe is the best development in Manchester.
I can't go back into coaching now in the short term – the next five years – and the reality of it is I don't want to. It could be that I'm no longer ever a coach in football but that's not a loss. Some people might think it is but the fact of the matter is it's not to me.
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Henrikh Mkhitaryan faces a race against time to play in next weekend's Manchester derby after suffering an injury on international duty.
The Armenian winger was forced off with a thigh problem during Wednesday's friendly against the Czech Republic, and test results have since ruled him out of Sunday's World Cup qualifier against Denmark.
Mkhitaryan is travelling back to be assessed by Man United's medical staff at Carrington this weekend when a decision will be made about whether he is likely to be fit in time for the visit of Man City on September 10th.
A statement released by the Armenian FA today confirmed that Mkhitaryan's test results were "not encouraging" and suggested he would be unavailable for the next week to ten days.
The statement read:
As reported, senior national team captain Henrikh Mkhitaryan received an injury against Czech Republic and as a result was unable to continue the match.
Mkhitaryan has had a medical examination in a clinic in Mlada Boleslav. Unfortunately, the results are not encouraging.
Mkhitaryan was found to have an injury in the lower third of the left thigh muscle. Such injuries usually require a week to 10 days to heal, which means that Mkhitaryan will miss the Denmark-Armenia match on September 4th.