Yes, Tyler Eifert is a free agent. And yes, he was tweeting about his former team, the Cincinnati Bengals, ahead of their Super Bowl LVI appearance against the Rams in Los Angeles.
Don't expect the Bengals to sign Eifert - Cincinnati's first-round pick in the 2013 NFL Draft who played tight end for the Bengals through the 2019 season - to a one-day contract for the Super Bowl or anything like that. Eifert didn't play during this past season after the Jacksonville Jaguars declined his team option last February.
But it appears Eifert's fingerprints could be all over a potential C.