He deserves to retire. If the club decided to pay him for a certain role so he can stay busy he also deserves it. Leave him alone.
With respect, that doesn't make sense.
'He deserves to retire' (I think you meant deserved) but also
'If the club decided to pay him for a certain role so he can stay busy he also deserves it....' (I think you meant decides) both can't be right. It is a cake and eat it situation, you retire and get a pension or you stay with the company and get paid, but the trouble is if you take the pension route and the company tanks you are blameless, but if you are still 'keeping busy' and it all goes wrong, you become part of the problem...
I've just been watching a youtube video - a chat show thing with Gary Neville and Roy Keane and it is very interesting. There was a bit about how ruthless Sir Alex was at the end of Keane's time at United which made me think: how odd that nobody has been ruthless with him.
Compare my club and yours: there were some calls to give Arsene Wenger a senior role after his many years of service at Arsenal, but it didn't happen. Even without that, his replacement Unai Emery struggled. But fingers crossed we seem to be over that now. Contrast that with United where a succession of managers have tried to replicate Sir Alex's success, but all the time with him in the background - it makes it ten times more difficult, it must do.
As regards the OP - he never will speak out against the Glazers, not even a little bit. As the Keane video showed, both that legendary midfielder and the legendary ex-Manager share certain characteristics - both are incredibly stubborn, incredibly self-confident and neither are likely to ever admit to past mistakes. Alex Ferguson speaking out against the Glazers? Man Utd. have more chance of winning the PL this season, than that happening.