This is a hypothetical, but consider it. Martinez record might easily look like this come May.
First season, 5th place, record premier league total.
2nd Season, 5th round of the Europa Cup was it? and 12th in the league.
3rd Season, One semi, and FA Cup win. Another season to forget in the league.
Now as I said it's hypothetical but does that record look that bad considering the last twenty years? Obviously a lot would depend on winning the cup. Now let me state, I don't think at the moment Martinez has the necessary experience, skill set, whatever you want to call it, to be a successful Premier League manager. However, if the hypothetical target is met. I think that's not a bad return, factoring in the positives and negatives of his tenure.