If you go back and read what Ivan said about Martin the first game he moved him to 2nd row to cover injury, you will realise why Martin has played 2nd row ever since.Ivan from the beginning thought he was a middle too. Bringing in Garner fixes that spot.
Even if we sign Garner for next season, it will be to cover for Kikau leaving, not to move Martin to the middle.
I will bet you $100 that Martin is still starting at 2nd row in game 1 next season.