Crabtree saga, Mangini and Tennessee's D 

September, 27, 2009
9/27/09
10:55
AM ET


Let's start with the obvious. San Francisco no longer can trade Michael Crabtree this season. Not even after it signs him, if it can.

The collective bargaining agreement clearly says if a player has not signed 30 days before the season -- which in this case would have been Aug. 14 -- his team is forbidden from trading him in that league year.

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