So is Martinez going to drop the priceless Stones, the captain Jagielka or has he just paid almost £10 million for a substitute when there are areas of the first team that need strengthening?
It's very likely that Mori will be gradually introduced into games and learn to get up to speed with Premier League football, I think we could see him play quite a bit at left back at first until Baines comes back. He will certainly get other chances as Stones or Jags will at some point pick up injuries or suspensions and he might get a run out in the League Cup if we were to progress further.
E.g. we have a 'keeper who is declining (OMG did you not see him in that one game vs Spurs the other day) and is 37. We will now need to buy a new number 1 next year who, for our ambitions, will/should probably cost £10m+ and we do not have this much sought-after number 10.
A new long term quality goalkeeper would be very nice, but for the moment it is not an enormous priority. I am willing to back Howard and believe he will have a better season than last year, of course he will still concede some poor goals but he has the mentality to recover from those situations. As for Robles, I believe he is a player who needs consecutive games in order to build confidence and perform competently and this is what we saw last season when Howard was out injured. In fact, I felt very sorry for Robles the moment Howard was fit again he was dropped despite Howard's previous poor form.
Next season I expect Martinez to be at least considering the long term future of this position - as long as we don't end up in the same mess as Man Utd.
Honestly, do not really get this signing. I have been asking for a CB for the last four or five years but this doesn't really make sense. I cannot see him changing the first choice back four. If he's cover, I would've preferred to just give the kids a chance and invest the £10m elsewhere, or look at cheaper options like...dare I say it...Lescott.
Do you think he will change the back four?
I admit I am sceptical about whether Mori can make it in the Premier League and would have preferred van Dijk as a relatively safer option. Given the fee and the fact we are not the most blessed club financially, I expect that the fee will reflect the hope that Mori will - in the long term - eventually replace the 33 yr old Jagielka in the heart of defence.
I don't expect Mori to feature much in central defence at the very beginning, but inevitably, there will be injuries to our more established defenders so he will certainly get his chance to play. The future of Stones is still uncertain so he might be a replacement for Stones, otherwise, Jagielka might gradually be phased out of being a regular in the starting XI and by the time this happens, Mori should hopefully be experienced enough at Premier League level and competent enough to play regularly at centre-back for the mid to long term future.