Merahe was handed his clearance by Bucs last week Thursday after having been on the transfer list since the beginning of June.
Despite a ‘for sale’ sign hanging above his head there have been no keen takers for his services leading to the Bucs opting to give him his clearance just before the transfer-window closed.
Now a free agent, the 28-year-old winger can sign at any time of the season if he impresses at Celtic, the club where he made his name.
According to the Celtic website Merahe is hoping to cement a permanent move and the club’s technical team will closely monitor him after which management will step in should he be recommended.
Merahe joined Pirates in January last year amid pomp and fanfare then quickly faded to the bench before dropping down the pecking order to end in the wilderness.
When Merahe left Celtic for a fee in January 2007, he was the talk of town in the Free State capital; now he is faced with the situation of having to convince Celtic that he is still capable of delivering.
A speedy right winger Merahe has shown in the past that he has the ability to unlock any defence with his pace that made him famous to the Siwelele faithful.