RANGERS manager Steven Gerrard is unhappy with the Scotland coaching staff's treatment of Ryan Jack after the midfielder picked up a knee injury whilst on international duty.

Jack left the Scotland squad before Monday night's game against Belgium after exacerbating a pre-existing knee injury: something that Gerrard feels was entirely avoidable.

"Unfortunately, he was asked to do an 11k session two days after an Old Firm which made his knee flare up," Gerrard said.

"So we have had to manage him, he has had to have a couple of procedures since.

"He did a light session with the physio today and we are hoping to get him into training tomorrow.

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"I think it's just careless. You should never, ever do 11k two days after playing 90 minutes. That's the education I've had."

The Rangers boss said that the Scottish FA were aware of the condition before Jack joined up with the squad and argued that more should have been done to prevent another injury.

"Ryan's got a knee issue that he manages and he has done for a long time," Gerrard added.

"The SFA are aware of that, their fitness coach is aware of that.

"I think everyone in Scotland watched the Old Firm and saw Ryan play 90 minutes. And then 48 hours afterwards, he did a double session."