It was announced last month that Salah will leave Liverpool after nine years at the end of this season.
With over 18 months to run on his current deal, Salah will leave as a free transfer.
Aboutrika said on Bein Sport: "One of the reasons behind Mohamed Salah leaving Liverpool is the presence of Arne Slot, because we've seen issues in the recent period.
"You, Slot, pushed the man away. Salah only had a two-year contract with Liverpool…
"Salah wants to work with peace of mind and enjoy the next phase of his career. Salah doesn't need any validation from Slot or anyone else."
Aboutrika added: "I spoke with him and told him about the preferred destination to go there. My relationship with him is one of brotherhood and friendship.
"I love him for the sake of God and I will not use my relationship with him for work. I told him my point of view on his next destination. Salah does not need anyone to guide him or give him advice."