The exertions of playing in St Petersburg and Aberdeen within three days are bound to be reflected in the side that Brendan Rodgers sends out against Dundee on Wednesday night.
After making seven changes for the match against St Johnstone the Celtic boss was heavily criticised and although that move backfired in Russia it did provide full points from Pittodrie.
It’s unlikely that Rodgers will make that many changes but with a few players emerging out of the treatment room the Celtic boss will be looking to get his squad at peak fitness for the run-in to the season.
Facing Dundee and Morton at home isn’t as demanding as being away to Zenit and Aberdeen but at this stage of the season there is little margin for error.
Going to Ibrox with a nine point advantage and a Scottish Cup semi-final to look forward to will banish the European hangover and allow everyone to focus on another domestic treble.