Akmal was banned in April after he failed to report corrupt approaches at the beginning of the currently suspended PSL.
The 39-year-old Kaneria scalped 261 wickets before being banned by the ECB for life for spot-fixing in English county matches.
PCB CEO Wasim Khan has said the six cricketers who have returned negative after retests will have to undergo a third round of testing before being allowed for the England tour.
The new names on the list are Kashif Bhatti, Mohammad Hasnain, Fakhar Zaman, Mohammad Rizwan, Mohammad Hafeez, Wahab Riaz, and Imran Khan.
Imad Wasim and Usman Shinwari, also screened in Rawalpindi, have tested negative and, as such, will travel to Lahore on 24 June.
Younis said he feels 'privileged to have been again offered the opportunity to serve Pakistan for a challenging but exciting tour of England'.
Malik also dismissed the findings of the Justice (retd) Malik Qayyum commission report on match-fixing against him.
The PCB medical panel will continue to closely monitor Hasan's progress over the next five weeks before deciding next steps.
Umar, 38, who appeared in 44 Tests and 22 ODIs, said people should panic if they contract the virus.
The former fast bowler claimed he will not allow the PSL to die and he will come forward with financial and other support to help save the T20 league.