What happened: Martin O'Neill has officially signed a one-year permanent contract to remain as manager of Celtic, ending months of speculation at Parkhead. The 74-year-old veteran finalized the agreement on June 5, 2026, after successfully guiding the club through a period of transition.

Why it matters: The appointment brings leadership stability to the Scottish giants following their recent domestic double under O'Neill's guidance. His permanent status is expected to accelerate the club's summer recruitment plans, including a reported pursuit of a new left-back to bolster the defense.

What to watch: Expect Celtic to intensify transfer negotiations for defensive reinforcements now that the managerial situation has been formally resolved.