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The Dolphins signed Marshall to a four-year, $47.5 million extension in 2010, but the mercurial receiver brought too many headaches in the locker room and in the police blotter. The Bears are counting on the fact that a reunion with Jay Cutler can keep Marshall in line and give them the top No. 1 option they've lacked for years. It's a gamble for both teams, as Marshall's attitude could sabotage Chicago; meanwhile, Miami left itself precariously thin at receiver.

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