Petke says the Aussie's character and professionalism is now a huge influence on the entire club.
"Invaluable,'' Petke tells the New York Post. "A player like Tim is invaluable and a player like Thierry Henry is invaluable. You can debate for whatever reasons. But talking about Tim Cahill, he's a guy cut from my cloth. To give him respect, perhaps I'm a guy cut from his cloth.
"The guy's played through severe injuries, limped around the field. He's a guy I could go to him tomorrow and say, 'I think you'd be a good left back.' He'd smile and say, 'Let's talk tactics.' If I came to him tomorrow and said I think, 'you'd be good as a goalkeeper,' he'd smile and get out the goalkeeping gloves.
"He's a guy if I see a young guy who needs either a kick in the ass or needs a hug around the shoulder, he's three steps ahead of me. He has the pulse of the locker room.''
Petke added: "If you had a roster full of Tim Cahills, it's easy coaching.''
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