"As the manager's said we believe that a player like Carlos can give us a great boost, especially in that striking area," he told Sky Sports News.
"We need one more player, there's no doubt about that."
"The experience and the roots of Carlos are a little bit different (from our other signings)," he continued.
"I think it'll be easier for him to adapt because of how he did in the Premiership, the experience he has with West Ham.
"For me the most important thing is the number of years he's been playing first division games, and his contribution with the national team of Argentina."