Mohamed Chalali is in Aberdeen's squad for the League Cup clash with Dundee after completing his move to Pittodrie.
The 22-year-old striker flew in from Greece after tying up paperwork with his former club Panionios and is eager to launch his Dons career immediately.
Aberdeen manager Craig Brown told the club website: "The lad is ready to explode onto the scene.
"Although he had a very early start, he's getting some rest now and is desperate to play."
The club have not yet released details of the contract signed by the Algeria Under-23 international.
Speaking the day before the transfer was finalised, Brown backed Chalali to bring a creative spark and help compensate for the loss of Chris Maguire to Derby.
"On the evidence we have seen of Mohamed Chalali, he'll score as well as create so we are optimistic about that signing," said Brown on Monday.
The Aberdeen boss is confident his latest signing will thrill supporters as he joins Scott Vernon, Josh Magennis and Darren Mackie in the Dons' strike department.
Brown added: "I genuinely think that our strikers at the moment should excite the fans.
"Vernon is an exciting player when he goes through on goal and when a cross comes in you expect Scott Vernon to be there or thereabouts.
"Josh, we all know how the fans can be lifted when he gets possession. Darren Mackie works tirelessly and is an exciting player.
"But I think Chalali is slightly different because he's more disposed to taking a man on and beat him on the ground, and does the kind of job that Maguire did here, which was mainly creation."