The Vontae Davis tour is underway. The cornerback is taking his first free agent visit on Thursday with the Bills, a source tells Adam Schefter of ESPN.com (on Twitter). 
The former Colts standout was released by November amidst health issues and a possible clashing between him and the coaching staff. This week, Davis was given medical clearance by doctors, paving the way for him to meet with interested clubs.
Like fellow cornerback David Amerson, Davis has the unique distinction of being an impact free agent who is available here in February. The Bills face the possibility of losing E.J. Gaines in free agency if they cannot re-sign him, so they’ll be keenly interested in someone like Davis who can bolster their depth – even if Gaines stays – and also contribute at safety.
Davis, who turns 30 in May, has not done much over the last two seasons. However, he did earn back-to-back Pro Bowl nods in 2014 and 2015.