Ittihad needs to prepare almost 200 millions to get salah from liverpool. Salah's contract is still quite long, but it seems like that ittihad will not be able to get him if the club will try to give small offer like 120 millions.
FSG will let him go out as long as ittihad will able to pay more than 150 millions. Salah has received an offer at the deadline of summer transfer season but the time was not enough.
Ittihad were ready to pay that money to take Mo Salah from Liverpool in the last week of summer transfer season. They even had a group of staffs went to Liverpool to discuss details and finalize the transfer but Liverpool were not ready to let him go as they no longer had enough time to find an alternative for Mo Salah.
So I think money is not big issue with Al Ittihad and they will come back in the winter or next summer transfer. Liverpool probably will not let Salah go in the winter transfer because they still fight for Premier League title against Manchester City. Letting Salah go will affect their power too much and they are smart enough to not take this risk in the winter transfer season.
I hope that salah will change his mind after this. Given the circumstances, it is quite likely that people are now becoming increasingly concerned about how Saudi Pro League clubs will go about recruiting top-tier players from European competitions.
Rumor is Salah wants to join Saudi Professional League with very good salary for him. Staying in Europe two or three more seasons likely won't help him to win Champions League or Ballon d'Or but moving to Saudi Professional League will help him earning very massive money just within a few years.