Plymouth manager Paul Sturrock admits one of his latest signings could be "terribly indifferent" but hopes to tap into the potential of flying winger Yala Bolasie.
Sturrock, who has also recruited goalkeeper Graham Stack from Reading, has snapped up Bolasie from Maltese club Floriana for a nominal fee following a successful trial spell.
The 19-year-old, who started his career with Rushden and Diamonds, was also wanted by Austrian club Sturm Graz.
"Bolasie has been signed for one reason. He has out-and-out potential," Sturrock told Plymouth's official website.
"At his time in his career he could be good, bad or terribly indifferent. What I've got to do is settle him down.
"He is my out-and-out development player - my wild card. But he does have one ingredient; he can catch pigeons. His pace is frightening."
Meanwhile, former Arsenal youngster Stack, 26, , who has also had loan spells at Wolves and Leeds, has agreed a two-year deal at Home Park after leaving Reading.
Plymouth were down to one senior goalkeeper in Romain Larrieu following the suspension of Luke McCormick.