The former Swiss prodigy has now joined Vaduz in the Swiss Super League.
The 24-year-old Swiss goalkeeper never played in a first-team game during his seven-and-a-half-year spell at Villa Park.
The three youngsters will reportedly be let go by the club this summer when their contracts expire.
The 24-year-old Swiss goalkeeper made his debut for the League Two club in Saturday's 1-0 loss to Accrington Stanley.
The Swiss under-21 international will provide emergency cover for the National League North leaders.
The 23-year-old Swiss is poised to sign a contract extension at Villa Park despite his recent injury blow.
The club's fourth-choice goalkeeper is nearing the end of his contract and now faces three months out with a broken leg.