According to the source, the PCB has previously set aside money in its fiscal budget to pay for all stadium refurbishment and facelift expenses.
“The selectors have recommended no change in the financial part of the central contracts which would now be revised into 12-month contracts with players fitness, behaviour and form all to be assessed every 12 months,” a board official said.
The series has been evenly fought with both teams winning two games apiece.
Sri Lanka could be open to playing at least one Test in the country, after a security delegation visited Lahore and Karachi and gave SLC "very positive feedback".
De Villiers will return to the politically unstable country for the first time since South Africa toured Pakistan in 2007.
Abell, a wicketkeeper in the match, scored the double hundred for Northern India against Army in 1934-35.
Pakistan is on a long road to revive international cricket following six years of isolation from 2009 to 2015.
Sri Lanka -- the first major team to visit the country since the 2009 terror attack -- will play a Twenty20 match.
Sunday's Twenty20 international is being hailed as a brave decision by Sri Lanka and a milestone for Pakistan as it attempts to end its sporting isolation.
It would be after nine years when Sri Lanka would be returning to Pakistan following the horrific terror attack on their team bus in Lahore.