Liverpool midfielder Curtis Jones is still some weeks from a training return.
The 20-year-old missed Liverpool's 2-0 win against Atletico Madrid in the Champions League after being poked in the eye during a training session.
Doctor Jim Moxon told the club's official website: "It's a freak injury and very unlucky, but the important thing to emphasise is there is no lasting damage and his vision won't be impacted beyond the recovery period.
"However, the nature of the issue means caution is important; we need to allow it time to heal and we can't rush it, therefore it won't be a speedy return.
"It needs to mend before we are able to reintroduce Curtis to full training, but there are things he can do in the meantime to maintain fitness.
"We can't put a specific timescale on a return beyond it will be a number of weeks from now as it heals naturally, so it's not one we will risk and patience is a virtue with this specific recovery."
The accident took place during a Liverpool training session ahead of their Champions League clash with Madrid.
Need a VPN? Or seeking to switch? Then support Tribal Football by clicking here to sign up with our official partners NordVPN. Not only will you receive the best VPN experience, but also great discounts by signing up via Tribal Football. Thanks for your support!