What is clear, though, is the potential inclusion of Barnes to elevate Scotland’s attacking options.
This is a Champions League player who is performing in a domestic division many perceive as the world’s most challenging.
Barnes’ double against City on Saturday took his tally for the season to six in 18 games. Three of them have come in four Champions League matches.
Since the start of last season, he has 15 goals and seven assists in all competitions from the wing.
There is simply no other Scotland forward providing this level of output at this level for their club.
On Saturday, Barnes could have had a goal or two to his name by the time he drilled in a deadly opener, which showcased his direct running and ability to link up.
His second, which proved to be the winner, demonstrated a poacher’s instinct, adjusting his body at close range to take an excellent first touch before burying on the rebound.
Scotland have long lacked real pace, drive and quality in their attacking areas, even after the emergence of Ben Gannon-Doak, who has been a revelation for Clarke.
That became clear when the Bournemouth winger was taken off on a stretcher in the first half of the incredible victory over the Danes last week. He has since had surgery on a hamstring injury and faces months out.
Without the 20-year-old, Clarke’s side became predictable in open play and had no out ball during periods of relentless Denmark pressure.
Barnes would be a big help in addressing that. The prospect of him playing off his favoured left side with Doak on the opposite flank is certainly an exciting one.
However, it seems some pride will have to be swallowed for that to become a well-received reality.
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