The Patriots had trade discussions with the Texans, Cowboys and Bills, per source.
— Jeff Howe (@jeffphowe) August 31, 2014
Mallett, 26, was a third-round pick of the Patriots in 2011. He has been Tom Brady's primary backup but has appeared in only four regular-season games. He completed 53.8 percent of his passes this preseason.
It's unclear when the Patriots and Bills had discussions about Mallett and if they were affected by the Bills' signing of Kyle Orton on Saturday.
The Texans surrendered a sixth-round draft choice for Mallett, according to ESPN Houston Texans reporter Tania Ganguli.