Linebacker/defensive end Mario Williams will make his first free-agent visit on Tuesday night, to the Bills.
Per a league source, three other teams are ready to bring him in.
No additional visits will be set until Wednesday. The Bills likely hope that no further visits will be set at all.
Williams has shown that he can function in a 4-3 defense and a 3-4 defense. But he prefers the 4-3, and that’s what the Bills run.