The 24-year-old, who left Ahli last summer, notched in seven league goals so far this season and could be top scorer if he found the net against the Red Devils.
"I don’t care about any personal glory. All I hope to do is play a part in winning the game," the former Ahli man told FilGoal.com.
Ahli will play the game without defender Wael Gomaa who's suspended, but Al-Weeshi added that Gomaa's absence will make no difference in his approach to the clash.
"Of course Gomaa's absence will be a big loss to Ahli, but they (Ahli) have many good players who can all fill in Gomaa's place."
Not Afraid
Meanwhile, Contractors coach Mohamed Radwan said that his team are fully prepared for the clash against the leaders.
While stressing that he respects his opponents, Radwan stressed that his players have what it takes to take on the African champions.
"My players are aware of Ahli's might and power, but we're not afraid of facing them on Wednesday," Radwan told FilGoal.com.
"We are all motivated for the clash and over the last few days I've been trying to relax my players because I don’t want them to be tensed."
Contractors are currently tenth in the table just three points more than fourteenth-placed Egypt Telecom, and Radwan added that his team will be targeting a win to move further away from the relegation zone.
"We always try to play attacking football and it will be no difference when we face Ahli.
"Our main aim now is to stay away from the last three and head nearer to the top four clubs."