The 40-year-old has targeted the midfield duo of Magnus Wolff Eikrem and Mats Moller Daehli, both capped by Norway, who he worked with at former club Molde and while in charge of the Manchester United reserve team.
Eikrem, 23, is currently at Dutch club Heerenveen, having been sold by Molde last summer, but he attended Cardiff's FA Cup win at Newcastle on Saturday and has travelled back to south Wales to undergo a medical.
Press Association Sport understands the deal will be worth around £2million and should be completed before the upcoming Premier League game against West Ham.
It is understood Daehli, 18, is also set to undergo a medical and complete a switch from Molde in the coming days.
Cardiff have also been linked with moves for Blackpool's Tom Ince and Crystal Palace's Jonathan Williams, as well as a loan deal for Manchester United's Wilfried Zaha.