Charlie Sheen has offered to give a waiter $1,000 after he was left a 20 cent tip by an NFL star. The 'Anger Management' actor took to his Twitter account to make the generous pledge to waiter Rob Knelly after he was given the measly sum by Philadelphia Eagles star LeSean McCoy while serving him at PYT restaurant in Philadelphia. Charlie tweeted: "dear Tommy Up at PYT in Philly. Please tell Rob K I'm pledging 1000 dollars to him for the tip debacle just wanna help. c #NoJudgement (sic)" The 49-year-old actor's offer comes after American footballer McCoy hand wrote the 20 cent tip on his receipt after splashing out $61.56 on a meal at the eatery which led to restaurant owner Tommy Up sharing a picture of the bill on the establishment's Facebook page. Server Rob - who is a Baltimore Ravens fan - claims McCoy and his friends were using rude language and making "derogatory comments" during their time in the restaurant.