Cahill is one of the most effective headers of a ball in the Premier League and he admits he is fortunate to have such a rich supply line from the left.
"I think I'm lucky because I've got a relationship with Bainesy where we work together a lot on the pitch to try to make things happen," Cahill told evertontv.
"But I think I am lucky as well because he's got that special left foot which can create chances and put those chances on a plate - hopefully for myself to finish.
"He's a great player and someone who is not only effective in defending but going forward as well he does give us that different dimension.
"I'm very happy to have someone like that on my side because I rely on him a hell of a lot and I give him a hard time about putting the ball in the box and helping me get more chances."