Not sure about this trade, but it does give us an ILB presence and he did have a Pro Bowl year in 2018. He didn't do much last year. I actually thought Lawson had a good year for us, but it's like the team is tweaking and fixing mistakes on defense.
Yahoo! Sports wrote:
The financial implications for the Dolphins are a net break even against the salary cap — the Dolphins will pay McKinney $7.2M in 2021 for his services while taking on a $2.67M dead cap hit for the trade of Lawson, equalling nearly to the exact dollar amount the $9.83M cap hit that Lawson was scheduled to bring on in 2021. And, with a breakeven dollar amount, the Dolphins are able to check one of their critical boxes on the defensive side of the football: a between the tackles run stuffer that the team has been sorely lacking.https://sports.yahoo.com/report-dolphin ... 01068.html
Miami filled the void left behind by the trade of Raekwon McMillan last summer with veteran linebacker Elandon Roberts, but Roberts was limited in coverage, struggled in space and suffered an injury to end his season prematurely. To boot, Roberts is an unrestricted free agent.
In McKinney, the Dolphins secure a player that they will have three years of contractual obligations from — and no guaranteed signing bonus figures that would lock the team into a cap commitment that they’re uncomfortable with.