Cardiff’s hierarchy must decide whether they want an experienced boss at the helm or a younger coach with potential.
The Welsh club are seeking their 12th permanent manager in 14 years under Vincent Tan’s ownership.
Riza has done his reputation no harm during his spell in charge and though things could change in the next few days, time is running out to appoint a permanent successor to Bulut ahead of the Championship’s resumption.
Riza, meanwhile, has said on social media, external how grateful he is to have been given a chance to lead Cardiff.
Riza referred to the “sacrifices” required to succeed, including the fact “people around you miss so much of your time”.
He added: “Hardship and adversity makes us who we are in the relentlessness to be the best for those around us to have the moments they deserve.
“I am grateful for this opportunity that I have been given by the owner, club, players, staff and fans whatever the outcomes.”