Its a good thought, but the only place they are ever likely to be released is in some huge Scottish estate - which would need a huge amount of fencing. They’d be absolute panic if one got free.
Years ago, (1970s?) I remember a young wolf in Norway deciding to head south to the moor populated areas of the country during winter. As it did so the Norwegian ‘red tops’, were having a field day; ‘lock up yer children’, ‘stay inside’, don’t let your dogs, cats, sheep, pigs, cows out unless you guard them and other crap… There were quite a few photos in the press as it was using roads to travel south. Eventually someone managed to run it over, and the press published photographs of it with it’s jaws spread wide open so everyone could see its jaws/teeth.
It would need lots of wolves to reduce the huge number of deer (of most species) at least in Scotland where the estates seem to make a fair amount of cash from deer stalking. And that’s assuming they’d bother with deer when there’s plenty of (or were), Arctic Hares or other easier to catch game to eat.