The 27-year old Scotland midfielder has been struggling with the season but feels he is on the improve ahead of tomorrow night's vital Champions League clash with Spartak Moscow.
"I am feeling good. It seems to be improving," said Brown.
"I have trained five or six days and there is no pain. I got 65 minutes at the weekend (against Arbroath) so that has definitely helped. I am going to continue until I can't train and can't play any more."