It is alleged that Nacer Chadli opposed Pulis’s gruelling schedule – which includes 5am starts, twice-daily bike-rides up steep mountains and back-to-back jogs up and down daunting Austrian hills – during an angry exchange on the morning his teammates departed.
Although the pair resolved their differences, Chadli persuaded Pulis to allow him to stay behind to carry out his own rigorous training schedule.
However that is unlikely to go down well with the rest of the Albion squad as they sweat it out in Austria on their tortuous pre-season ritual for the third year under the Welshman.
Chadli is understood to be content with life at Albion and does not appear to be trying to manufacture a move, less than a year after signing a bumper four-year-deal last August.
But the Belgian international will have some work to do to repair his reputation within the Albion dressing-room which is regarded as one of the most tight-knit in the Premier League.
However Pulis will be working hard to ensure their is no ding-dong between his players before Chadli rejoins the squad next week to jet out to Hong Kong for the Premier League Asia Trophy, along with Leicester City, Liverpool and Crystal Palace.