MR says he wants 4 more in but only thinks 2 are realistic, then he has no other option but to look within his current squad to fill the gaps. If that's the case then a few will be thrown in and a few more will be found out until the solution is found.
Either way I can't see MR holding on to those who can't step up. He wants to improve and move higher up the league, some within this group will have a chance to gain a starting spot and hold onto it. It would be great to see a few younger players get a chance and shine. Tough season, but I think MR is sounding like a man who expects us to compete in this league not stand still.