Cardiff have signed striker Jo Inge Berget, but boss Ole Gunnar Solskjaer says there is no deal yet for Wilfried Zaha.
And Wigan have confirmed that they have accepted a bid from two clubs - one of them Cardiff - for their defender Ivan Ramis.
New Bluebirds boss Solskjaer has already brought in midfielders Magnus Wolff Eikrem and Mats Moller Daehli, from Heerenveen and Molde respectively, as he tries to put his stamp on the squad.
Berget will be re-united with Solskjaer, who was his boss at Norwegian club Molde - and where he also played with Eikrem and Moller Daehli.
The 23-year-old, who like his Norwegian compatriots shares an agent with Solskjaer, passed a medical on Thursday evening and has signed a two-and-a-half-year deal.
"Nothing's been concluded with anyone apart from the Norwegian lad, Jo Inge Berget," Solskjaer told Sky Sports News.
"He's a forward, a full international who only had four or five months of his contract left so he came here in a very good deal for us.
"He knows the way I want to play, he's a striker, a secondary forward, strong, very intelligent, clever, scored against England in the Under-21s European Championship. He will do well for us."
Berget has won four Norway caps, but endured an unsuccessful spell with Serie A side Udinese earlier in his career before returning to his homeland where he has since emerged as one of their best prospects.
Meanwhile, another player expected to complete a move to Cardiff is Manchester United winger Zaha.
The 21-year-old has made just four appearances for United this season, one of which came in the Community Shield win over Wigan.
A move to south Wales would allow the England cap to gain regular first-team action, but Solskjaer insisted, contrary to reports, that the player has not had a medical.
"You have to ask Manchester United," said the Bluebirds boss. "He is a Manchester United player. I cannot comment about players who are not Cardiff players. Nothing has been concluded."
Centre-back Ramis could follow Berget into the club as the Spaniard has been given permission to talk with the Bluebirds, who have agreed to Wigan's asking price.
Latics boss Uwe Rosler said: "There have been a couple of clubs who met the asking price and we gave Ivan permission to talk to them, that's all I can say.
"One is well documented. One is Cardiff."