The team lost veteran safety Madieu Williams to free agency in the offseason and while he under performed last year , he was still a productive player and a solid starter . Set to replace Williams is Marvin White , a 2007 fourth round pick who lacks experience and top end speed . But he made plenty of plays collegially at TCU and the team hopes that playmaking ability will transfer to the NFL .

Generate a question about the above context.
What might be the reason the team lost Madieu Williams ?
Choose from:
a). Madieu Williams may not have wanted a new contract as they valued him .;
b). Madieu Williams may have wanted a new contract but they could n't agree on terms .;
c). None of the above choices .;
d). Madieu Williams may have wanted a new contract and they agreed on terms .;