PBM owner Paul Bird has signalled that James Ellison will not continue with the team in 2013, by wishing him well in the future on the eve of this weekend's Valencia MotoGP finale.
“This year has been a massive challenge and it's fair to say it's been very difficult at times but we are committed to this project and we had to start somewhere,” said Bird.
“Despite all the pressure, James has done a brilliant job in establishing us into MotoGP and I'd like to thank him as it's been a bit tough at times and wish him well in the future.
“The team has also done a remarkable job in their first season and all this hard work will stand us in good stead for next season and beyond."
Ellison, who previously raced in MotoGP between 2004 and 2006, is 16th in the championship, having scored points in six of the last seven rounds, including a season-best ninth on the ART Aprilia in the storm-shortened Malaysian race.
PBM intends to expand to two riders next year, with Avintia's Yonny Hernandez tipped to join a new British rider.
PBM's BSB champion Shane Byrne is known to have the option of a MotoGP ride with the team, but is weighing-up whether to try and claim a record fourth BSB crown.