Bulls fly-half Handre Pollard could miss the start of the Super Rugby season as he continues to recover from a shoulder injury.
Pollard aggravated the injury during South Africa's Rugby World Cup campaign but was able to play for NTT Doccomo for a short spell in Japan.
He returned to South Africa ahead of the 2016 Super Rugby season but is a doubt for the Bulls after tweaking the problem, and will now seek specialist treatment.
The Bulls open their season against the Stormers on February 27, leaving Pollard just over a month to prove his fitness to head coach Nollis Marais.
"Handre will undergo a very thorough rehabilitation programme to improve the mobility and strength of the shoulder," said Bulls' high performance manager Xander Janse van Rensburg.
"We will then have another look in four weeks. If it becomes clear in this time that the shoulder is not responding to treatment, we will discuss the options of surgery.
"We are confident though that the decision to rehabilitate the shoulder for now will be the best one and this will hopefully ensure Handre will be fit and ready for the 2016 Super Rugby competition."