Sources say that former NFL star Michael Strahan is refusing to wed fiance Nicole Murphy until she agrees to sign a pre-nup. According to Star Magazine Strahan wants Murphy to sign the pre-nup because he has learned his lesson in the past from being divorced twice with four children. Strahan just wants to protect his $35 million estate for the future. But Murphy isn't feeling that according to a close source they say Murphy is hurt and has been pushing Strahan to come up with a date for their wedding but he just isn't budging. Considering the fact that Murphy's 13 year marriage to actor Eddie Murphy ended with Murphy receiving $15 million back in 2006 Strahan probably isn't going to budge any time soon.