高不湊低不就 [－－凑－－－]

Jyutping gou1 bat1 cau3 dai1 bat1 zau6
Pinyin gāo bù còu dī bù jiù

Definitions (CC-CEDICT)
  1. can't reach the high or accept the low (idiom); not good enough for a high post, but too proud to take a low one