Gillingham have completed the signing of midfielder Rashid Yussuff.
The 19-year-old has agreed a one-year deal at Priestfield after he impressed during a trial spell.
Yussuff was available on a free transfer after he departed Charlton at the end of last season.
The former Addicks man's arrival is a timely one, with Kevin Maher now a doubt for Saturday's League One opener against Swindon after suffering an ankle injury at Crystal Palace on Sunday.
Fellow midfielder Stuart Lewis has already been ruled out of the start of the season with an ankle injury.