Brisbane are facing a raft of injury concerns just three days before their NRL elimination final derby clash with Gold Coast.
Prop Josh McGuire and bench forward are the latest additions to the Broncos' list of worries ahead of Friday's match at Suncorp Stadium.
McGuire left training early on Monday and, despite assurances his thigh injury was nothing serious, the representative star was a notable absentee from training on Tuesday.
Glenn then left Tuesday's session early with a groin injury, however he later insisted it was only precautionary and that he was in no doubt for the match.
"(It was a) little bit tight through the warm up, I didn't want to take the risk of going through training," Glenn said.
Meanwhile hooker Andrew McCullough did not train as he nurses an ankle complaint and centre Tom Opacic was restricted to light duties due to a sore shoulder.
However second-rower Sam Thaiday played down the Broncos' injury concerns, saying his teammates were all just being "a bit sooky".
The injuries come after bench hooker Kodi Nikorima and centre Jack Reed were ruled out for the season last week, each with shoulder problems.