Ole Gunnar Solskjaer has told his trio of high-profile Cardiff City signings they have to make an instant impact for their new club.
The Bluebirds drafted in two players from Manchester United , with Wilfred Zaha completing his loan on Friday and Fabio arriving in south Wales earlier in the week.
Kenwyne Jones has also arrived at the Cardiff City Stadium, as part of an exchange deal that saw Peter Odemwingie head to Stoke.
The trio are likely to make their debuts in Saturday's game against Norwich, a match the Bluebirds cannot afford to lose as they sit bottom of the Premier League.
Solskjaer is positive about his new additions but knows a run of seven league games without a win means his new men have to deliver immediately.
"There is no honeymoon period when you come into the thick of it," said Solskjaer. "We expect them and want them to perform straight away.
"The players I have got in all give us something different and something that can make a difference, a presence in the box and enthusiasm. Together they complement my squad.
"We have really had a tough month but I have seen some great development in the month. We played some very nice football at Manchester United and the new boys might have been what we were lacking."
Solskjaer had particular praise for Zaha, who joined United from Crystal Palace in the summer but has made just four appearances under David Moyes this season.
Despite being barely used by the reigning champions, the Cardiff boss is confident Zaha will help provide a spark for his struggling side.
"He has pace, power, technical ability and goes past people. He will give us that extra change of tempo in the final third, where we really need it," he said.
"He will bring that little final bit to find pockets of space and produce a bit of magic.
"I don't think he has something to prove, he wants to play.
"He played a few games at United, but maybe not what he hoped for when he went there.
"He wants to play, to play with confidence and keep Cardiff in the Premier League."
Solskjaer has brought in six players in January, having added the Norwegian trio of Magnus Wolff Eikrem, Mats Moller Daehli and Jo Inge Berget earlier in the month.
Craig Conway has joined Blackburn and Etien Velikonja has moved to Portuguese club Rio Ave on loan.