He was apparently entitled to six months' salary on resignation according to his contract. It's difficult to see why this amount was doubled, especially with his being in the job for such a short time. He is also entitled to a massive pension. No doubt, he'll take up anther lucrative position soon. Had he been sacked – which presumably would have been because he wasn't doing the job properly – he would, bizarrely, have been entitled to a whole year's salary.
Half the trouble with the BBC is it has too many chiefs and not enough braves.