Stoke look to have secured their Premier League place for a sixth straight season after back-to-back wins against QPR and Norwich moved them on to 40 points, but Pulis' job is still under threat.
Potters chief Coates has always stood by Pulis and he may stick with him again despite an alarming slump in form during a tough second half of the season, but a decision is on hold.
Coates has said nothing should be read into his silence on the matter, but it will no doubt set tongues wagging, with reports claiming Arsenal number two Steve Bould could be lined up as a replacement.
However, Pulis has said he will not walk away from the Britannia Stadium so Coates would have to sack him. That would seem harsh after a great run in the top flight and Coates is expected to start next season with Pulis at the helm, when hopefully lessons will have been learned.
"We have had a very flat second half to the season and nobody is trying to hide that," he stated. "You are always trying to learn from such things to try and improve."