Sky Sports sources understand Stoke City have sanctioned winger Jermaine Pennant twice in recent months and that is the reason he has not featured for the club.
The former Arsenal and Liverpool winger has been frozen out of the first-team, having to spend most of his time on the bench.
Many Stoke fans queried the reasoning for one of their star men not being involved and now it transpires he has twice broken a club curfew while on away trips.
Stoke had managed to keep the news out of the media, but Sky Sports understands two incidents have occurred.
The first dates to December 4th when Stoke played at Everton, with sources indicating he broke the club's curfew and did not return to the team hotel until the early hours, which led to him being dropped from the squad.
Stoke had kept that matter under wraps, but a second incident occurred at Crawley last month ahead of the FA Cup clash when Pennant left the team hotel and broke the curfew again, resulting in him being sent home on the morning of the game.
Speaking on Thursday, Pulis again refused to confirm any issue with the player - telling Sky Sports News HD: "You talk about Jermaine all the time, but there are other players in the group too and this is not about one individual player and never will be and that will not change."
But Pennant took to Twitter to refute the claims, saying: "I'm all over #skysports saying I've been fined when it's not true the gaffa is going mad.
"So to all the stoke fans and for the record there is no problem with me and TP I have not been fined and we haven't fallen out at all.
"I respect our manager and I respect my team mates and most off I respect the club and fans."