PAF has 4 IL-78MP tankers, should be enough. Combined with SOW ranges and proximity of our bases to border its not a major concern. If it needs to convert existing platform, C-295s can be converted to tankers as well as C-130s, both more effective options than investing/developing on buddy refueling for JF-17. Furthermore a aircraft that could augment the C-130 fleet and eventually replace it is on the cards in the future (low on the priority list though) but PAF could choose a option which could have the refuel capability as well.PAC should develop buddy refueling for JF-17. One IL-78 can only do so much.
Eg Embraer C-390/KC-390 (Shares same engine as Airbus A-320 series)