The 66-year-old has had his head stitched up following the painful gashing.
The Another Day In Paradise singer has since postponed performances on his current tour, titled "Not Dead Yet Live Tour," which were originally scheduled for June 8 and 9 in London.
The Facebook post also alerted concert ticket holders that his shows have rescheduled for November 26 and 27.
See the full statement below.
Wishing Collins a speedy recovery!