I'm not sure about this one. Like The Sweeney, it was of it's time.
The only thing going for it is it will be set in Britain and not another buddy cop film in the US like so many others.
I guess it's time for the inevitable question. Why should play Doyle, Bodie and Cowley?
I would ditch two of the three characters and have new characters for the two main leaRAB.
If he were up for it I would replace Cowley with Doyle played by Martin Shaw for continuity. If he didn't want to do it, which I doubt he would then i would see if Lewis Collins would be up for taking the post in his old character Bodie.