Gordon Strachan had a heated exchange as Celtic went in 2-0 down at half-time in the Scottish Cup showdown with Rangers. John Kennedy's side were floored by goals from Steven Davis and a Jonjoe Kenny own goal as they struggled to live with the Premiership champions.
Both goals came from the left flank with Diego Laxalt struggling to deal with Joe Aribo. The Milan loanee was so poor he was hooked for Greg Taylor at half-time.
That switch sparked some tension in the studio though as Hartson accused Laxalt of an "embarrassing effort" to stop the second goal.
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