Highlands boss Brad Kastel confirmed Mathe is training with the National First Division outfit following the 37-year-old's release from Dikwena in July.
"He is training there, but look I don't know. Look he is an older player, he is 37 hey... I don't know," Kastel tells KickOff.com.
"He has been training with us, look he is a great player. I think he's got maybe a season [left] in him, so let's see... but he is training with us.
"I really don't know [when Mathe arrived]. We played a friendly yesterday and I went to watch and I did see him playing, but until then I didn't know about it either. You know how it is, it's up to coach Owen. He's obviously got a relationship with Owen from the past. They obviously know each other and he seems to think he can do a job for us. It's up to him, he must make a decision in the next few days.
"But look, Owen settled in well, he is a top professional. It's a pleasure to deal with him, he is an absolute top professional. Clever hey, astute. It's been only a week but I'm impressed with him."