He's gone 4231, 433 and 343 in-game. He's played it short with a lot of defensive third passing; he's tried a more direct approach. He's gone with two defensive cms and then with one defensive and one attacking.
He really hasn't been churning out the same formation and style all season.
It's a lazy charge.
He's struggled to cope with the high expectations from last season and the extra competition in Europe. No doubt about that.
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I agree with this entirely. In all honesty I think the legitimate criticism one can make of Martinez is he has been too willing to change things and not focussed upon what we are good at.
We have tried a variety of formations. We have also tried a variety of players in positions. We have tried fullbacks in midfield. We have tried Barkley and Naismith in the wide left position. We have Barry at Centre Half etc.
When I watch us, I don't look at a side and think "god if only he would do change x,y,z." Sometimes I'd get that with Moyes, if only he would drop Neville, or Cahill etc. This season under Martinez the worry has been more that I have no idea what our best 11 is and I think the players have lacked some continuity.
I think too early in the season he rotated teams in games we should have just focussed on winning. (For example Crystal Palace at home when we rested Mirallas etc). I understand Martinez's thinking, we have a long season, a bigger squad and our weakened team should have had enough to beat the Palaces of this world. The problem was we lost too many of those games, and we took for granted how easy it would be to continue last seasons miraculous form.
Of course the desire to rotate has been brought on by having the Europa league. But within that I think (or hope) Martinez would look back and say think that we should have put some stronger teams out earlier in the season worked out our strongest 11, stuck with it a bit and started to rotate more slowly as the season went on. It's much easier to rotate when you have a confident team, players who know what their roles are and others who are expected to come up and fill that void.
But yes, the accusation that we haven't been flexible enough doesn't fit. He has been too flexible if anything. In fairness there are reasons as to why he has looked to rotate more. This is the affect of having Europa league to some degree. It is also important to say, that strategically he has made some mistakes too within that and in honesty I think he would look to keep a more settled 11 earlier in the season in future. Turning a season around is not an easy thing to do, Moyes made an art of it, but it is a lot harder than it seems.