2. Buffalo Bills
The Buffalo Bills are a top-10 passing defense this season (at no. 10 currently) but have had some lapses at times, most notably allowing Mac Jones and Trevor Lawrence to have some big games against them.
Each of the Bills' starting cornerbacks have performed pretty well this year. If you ask Pro Football Focus, Taron Johnson, Christian Benford and Dane Jackson have all played good enough to earn grades in the 60's. However, stud Tre'Davious White was lost for the rest of the season and the Bills could use a true no. 1 corner.
Johnson has played his way into becoming one of the top cover corners in football this season, as he is currently the no. 3 overall graded corner via PFF and has a top-4 coverage grade. If Johnson came to Buffalo, he would take a lot of pressure off the cornerback room, which features mostly CB2 and CB3 types at the moment.
The Bills' Super Bowl window is right now, and at 5-3, they have had some inconsistencies to begin the year. Johnson is as consistent as it gets at the cornerback position, and the Bills would be a better team having traded for him.