At the same stage as with Martinez, vital just to get his arse out, the team can't play any worse so nothing to lose by taking it in-house for a bit,
Managing a successful under23's team is totally different from managing one of the world most competitive's football league. I'm not sure how Unsworth would fare over 30 odd games, huge risk, half a dozen games? ofcourse.
Still think the club will give Koeman one more transfer window to turn it around and I firmly believe he'll probably leave in the summer.