Should Inter keep Leonardo or sign a new manager and why?

Hes an amazing manager, he turned Inter around after Benitez left them in such a mess yet Benitez and lots of years of experience behind him and leonardo had key players out like walter samuel. Hes young and he has much to learn yet he knows how to do well in serie A. He was quite good I thought, with a really aged team at AC milan. Its rare for young managers to compete for top prizes well, only other good young manager I can think of is guardiola who competes at similar levels and pressures to Leonardo.