The Scottish midfielder is a prime candidate for the the Palyer of the Season award having turned in some outstanding performances for the club since moving to St Andrews from Glasgow Rangers last summer.
"Barry Ferguson's got a co-ordination and a touch on the ball that most players would kill for," McLeish told BBC Radio WM.
"He's brought a calmness and composure to the team without being casual and complacent. He's brought a real authority to this football club."