‘One of the most interesting camp battles will be at cornerback where the Bills believe they have three starters vying for two spots — Drayton Florence, Terrence McGee and Leodis McKelvin. Florence was just signed to a new contract, and McKelvin is a 2008 first-round pick who began to make strides last year playing in place of the injured McGee. If rookie Aaron Williams emerges, the oft-injured McGee could be a candidate to get cut.’