Brisbane hooker Andrew McCullough has been diagnosed with an MCL injury, after going down at training on Monday.

The Broncos rake will miss a number of weeks, although Brisbane's Head of Performance Paul Devlin didn't put a timeframe on his return.

McCullough will visit a surgeon later this week to determine whether surgery is necessary.

โ€œHe has had a scan today and he has got a fairly decent MCL injury so we will send him for a surgical opinion on that and go from there,โ€ Devlin told broncos.com.au.

โ€œWe have seen some guys come back from MCLs in accelerated time now so we will hold some hope for that.

โ€œThey tend to heal pretty well, he will go into as brace and we will progress his rehab journey straight away.

โ€œThere is no more professional player especially with injuries than Andrew, so if anyone is going to get back really quickly, he will certainly be a candidate for that.โ€