"I've never made a secret of it that my heart is in Pretoria and with the Bulls," he told Beeld. "But I cannot allow emotions to influence my career decisions.
"I have to provide for my family for a life after rugby. Therefore, any decision about where and for whom I play next will be purely related to the future. I'll think with my head, not my heart.
"My first choice is to play for the Bulls again, but I am certainly considering other offers from Toulon and also from the UK."
The 30-year-old added he would like his final swansong to be during the home series against the British and Irish Lions in mid-2009.
"It remains my dream to finish my rugby career by playing in the Test series against the Lions next year," Matfield said.