Mangers do practice that philosophy you know, and with success..SAF and Solskjaer are good examples..
1. ManU has a much bigger and quality squad.
2. QPR is no f***ing 'inferior opposition' to us. we are not world beater.
3. i never see SAF dropped Rooney in the league game when the points still matter unless he's not 100% fit. they do rest their key players , but only when playing in the cup games, or champions league when the result doesn't matter anymore
I've seen him rest both Rooney and Hernandez home against the WEAKEST teams. Honestly though, I was wrong about QPR, but home against the worst teams, we should have strong enough squad to rest one key plyer.
just edit my post, yes he would rest them only when there's upcoming mid week champion league match