"I had received a few phone calls from India, before going to Australia, to join the ICL and build a team but refused the offer straightaway," Mortaza told Tigercricket.com.
"That was the end of it for me."
I didn't think it was necessary to inform anyone because I was not interested in the offer."
Earlier this month 13 Bangladeshi players including captain Habibul Bashar walked out of the national team and joined ICL. Later these players were banned by BCB for competing in the ' rebel' tournament.
Mortaza is upbeat despite the large exodus as the Tigers prepare for a home series against New Zealand.
"We have got to move forward with what we have. I think we have some pretty good players who have come in and they all want to do well," the fast bowler said.
The 24-year-old suffers from ongoing knee problems, but is looking forward to a fruitful stint on the back of a visit to Dr. David Young, who operated on the paceman's knees five years prior.
"He checked my knees and told me there weren't problems with the ligaments. That was a big relief as I was obviously a bit tense when I felt pain there," enthused Mortaza.
"However, there was a bit of fluid collection in the left knee but that won't stop me from playing. Dr. Young has told me to continue with my natural bowling and has suggested I should get the fluid cleared sometime over the next six to 12 months."