Millwall have signed Cardiff wide midfielder Neal Ardley and Danish striker Poul Hubertz.
Ardley had a year left on his Bluebirds contract
Wide man Ardley, 33, had a year left on his Bluebirds deal, but was tempted by a two-year contract at the London club.
Poul, who stands at 6ft 4ins, joins from Danish outfit AAB for a nominal fee after impressing on trial.
Millwall also have Cardiff's Wales international defender Rhys Weston on trial as the Bluebirds seek to clear the way to bring in new recruits.
I will keep going as long as I can do myself justice
Former Wimbledon and Watford man Ardley came to Ninian Park on loan in March 2005 and impressed with his crossing ability.
He soon agreed a two-year contract at Cardiff, and - despite completing his A licence coaching badge - is keen to continue playing as long as possible.
"I will keep going as long as I can do myself justice," Ardley told the South Wales Echo.
"That may be two or three years, although the key is knowing when it's time to stop."