Yes but fans were saying Mountfield was "vital" - Especially so for his goals. But HK went out and bought a better defender and that turned out ok.He is an important part of a team that our manager is trying to build. Put simply, if we play a weaker player in any position...the team becomes weaker. Stones may not be vital right now...but can you imagine Everton being as strong in the 80's without Ratcliffe? When he started out he wasn't 'vital' either