"We have told Pakistan that we are keen to help Pakistan only if it did not clash with the IPL," Mendis told AFP.
Sri Lanka had offered to play in a short series of five one-day matches in Pakistan after Australia pulled out of a scheduled tour in March-April due to security concerns.
However the dates proposed for the series in Pakistan (April 23 to May 5) were clashing with those of the money-spinning league, set to take place at various venues in India from April 18 to June 1.
The date clash resulted in some of the top Sri Lankan players contracted to the IPL threatening to skip the series.
Mendis said SLC had already released players for the IPL and it would cause inconvenience if the Pakistan tour was to clash with the IPL.
The Pakistan Cricket Board has said that it was willing to offer SLC 800,000 dollars for the five ODIs