Thomas Davis was brought in to help Rivera, but don't discount his play

In this Nov. 5, 2017, file photo, Carolina Panthers’ Thomas Davis gets ready for the team’s NFL football game against the Atlanta Falcons in Charlotte, N.C. (AP Photo/Bob Leverone, File) **FILE**Thomas Davis thought about retiring once. It was 2018 and the linebacker even went on the NFL Network to announce the forthcoming season would be his last.

But that was two years — and two teams — ago.

The new Redskins linebacker said he gave no consideration this offseason to hanging up his cleats, a year after he first changed his mind about walking away. After the Los Angeles Chargers released him last month, the 37-year-old knew he still wanted to play football and he quickly found a suitor in the…