Fredericks, who can play at right back and on either flank, signed today after the Bees boss revealed at Thursday’s fans forum that he would have a new addition in place for the Capital One Cup trip to Walsall.
Ryan, who will turn 20 in October, has previous first team experience at White Hart Lane with Europa League appearances in the previous two seasons.
He will travel with the rest of the squad to The Bescot Stadium on Saturday morning and will wear squad number 18 for this season.
You can view an exclusive video with Ryan on Bees Player.