Rangers' Alfredo Morelos is a doubt for Sunday's Old Firm clash after being spotted on crutches days ahead of the match at Ibrox.
The striker is recovering from a thigh injury and was at Glasgow Airport on Thursday, departing for a reported scan in London.
Morelos picked up the knock while on international duty with Colombia and was unable to take part in his country's 3-0 World Cup qualifying win against Bolivia.
The 25-year-old, who has scored 12 goals in 26 league appearances this season, returned early from international duty for treatment but now faces a battle to recover for Sunday's match at Ibrox, live on Sky Sports Football.
A statement from the Colombia Football Association read: "The coaching and medical staff of the Colombia Men's Senior National Team reports that, after performing medical examinations on player Alfredo Morelos, a muscle injury to his left thigh was confirmed, which prevented him from participating in the previous commitment against Bolivia and in the same way does not allow him to participate in the next match of the Qualifiers for the FIFA Qatar 2022 World Cup.
