"I am delighted to announce that Akos Buzsaky has signed a deal to become a Plymouth Argyle player for the next three seasons," Argyle chairman Paul Stapleton said.
"As you know, Akos was an effective and popular player when he was here on loan and there has been a growing groundswell of opinion among our supporters that we should have made the loan permanent.
"But players of Akos' ability do not come cheap and there has been some hard bargaining. We have been working on this for many months.
"We have negotiated and we are pleased to say the deal has been affected and that Akos is with us for at least the next three years."