Fraser Forster, on loan from Southampton, and Kristoffer Ajer were in action for Celtic on Sunday.
The former Rangers winger, who now works as a pundit for BBC Sport, believes that the 31-year-old England international goalkeeper should have done better with the penalty that Celtic conceded late on in their Scottish Premiership game against Heart of Midlothian at Celtic Park on Sunday afternoon.
Conor Washington stepped up to take the spot kick for Hearts in the 81st minute, and Forster – who joined the Hoops on loan from Premier League outfit Southampton in the summer transfer window – saved it.
However, Washington made no mistake from the rebound, as Neil Lennon’s side won 3-1.
McCann believes that Forster should have done better and should have put the initial penalty wide.
The former Rangers winger was impressed with the performance of Celtic defender Kristoffer Ajer, who was playing at right-back despite being a central defender by trade
McCann compared the 21-year-old Norway international to Brazil legend Cafu, who is one of the greatest right-backs of all time and won the Champions League once and the World Cup twice.
McCann told BBC Sport about Forster: “I didn’t think it was a brilliant penalty and it wasn’t very powerful either. I thought he was down with enough time that Fraser Forster should have put it wide.”
McCann told BBC Sport about Ajer: “Kristoffer Ajer is looking like Cafu here. He is bombing up and down the right flank and has the freedom of Celtic Park.”