Miandad's warning to Nawaz came just a day after Pakistan's former Test pacer Ata ur Rehman said he had consulted his lawyers to send a notice to Nawaz for his comments.
Nawaz was until recently employed as a coach by the Board. His accusations came after the PCB recently appointed ex-Test spinner Akram Raza to the umpires panel and also appointed Rehman as coach for the FATA area.
Miandad said he would warn Nawaz to be careful about what he says in future.
"I can deal with him in two ways but I will only advise him the judiciary is free and independent now and if he says anything more I will take action," Miandad said on Geo Super channel.
He also made it clear he wouldn't like to go into the past of the former Test pacer who should avoid mud slinging. MORE
