That included the additions of guards Joe Thuney and Jonah Jackson (via trade), center Drew Dalman, defensive tackle Grady Jarrett, defensive end Dayo Odeyingbo, tight end Durham Smythe and wide receiver Olamide Zaccheaus, as well as some key re-signings of in-house free agents.

The Chicago Bears made a splash along the defensive line agreeing to terms with defensive tackle Grady Jarrett on a three-year, $43.5 million contract with $28.5 million guaranteed. Here's a collection of all of the grades for the Bears' expected signing of Jarrett, where experts are divided about whether this is a good move.

The Chicago Bears beefed up the offensive line with three starters in the first two weeks of March. The Bears traded for offensive guards Jonah Jackson (Los Angeles Rams) and Joe Thuney (Kansas City Chiefs).