Bale, fresh from his world-record transfer to Real Madrid, is yet to play this season.
He has been struggling with a foot injury but is keen to be involved in Wales's latest World Cup qualifier.
"He is here, he is really keen to play and wanted to be part of the squad," Symons told Sky Sports News.
"We are delighted to have him, the most important decision is to do the right thing by the player, be it a player from Real Madrid or any other club we will always do the right thing by the boys.
"He is obviously fit for selection and it has been fantastic having him as part of the squad, but we are mindful of how much training he has actually done."
Wales play Macedonia at 7.45pm tomorrow.