Chelsea interim boss Guus Hiddink has denied the imminent arrival of Alexandre Pato is a gamble.
The 26-year-old former AC Milan forward is poised to sign on loan from Brazilian club Corinthians until the end of the season.
"It's not a gamble," Hiddink said. "Coming on loan makes it possible to have a good view on him, whether he is able to adapt to the high demands of the club and the league
"He is in London. He is now in the process of bureaucratic paperwork."
Pato has been hampered by injuries in recent seasons and it is uncertain when he will first be available to Hiddink and Chelsea.
The Dutchman described the move as "a brave step" and the success or failure depends on the player.
He added: "It's up to him."
New York Red Bulls defender Matt Miazga's move is near completion, too. "We're not rushing, but he will be one of the squad members for the future," Hiddink added.
Hiddink was asked about the contribution of Diego Costa, who has six goals in six games after a prior fallow spell under Jose Mourinho, including last Sunday's decisive strike in the Premier League win at Arsenal.
"I'm very pleased with him," said Hiddink, who was speaking ahead of tomorrow's FA Cup fourth-round tie at MK Dons.
"I'm pleased with his efficiency. We're depending a lot on him, too much sometimes. He's of huge importance for us."
Yet Chelsea could be increasingly reliant on the Brazil-born Spain striker as Loic Remy could be allowed to leave before Monday's transfer deadline, while Radamel Falcao (thigh) remains injured. On Remy, who has a calf problem, Hiddink said: "I don't think being injured now has any influence on (him) staying or going. It's a minor injury, so we will see what will happen in the upcoming hours."
Ramires this week left for Chinese Super League side Jiangsu Suning for a fee reported to be in excess of £20million as Chelsea make changes to the squad ahead of Monday's deadline.
There was speculation about England vice-captain Gary Cahill being unsettled due to being displaced in the first XI by Kurt Zouma.
Hiddink has spoken to the defender and expects Cahill, who earlier this season signed a new four-year contract, to stay.
"There was no hint from his side 'can I leave the club?' Nothing," Hiddink added.
"First he's very happy. He's of value and, as far as I'm concerned, I will have him in the upcoming months and I think the club will have him in the upcoming years."