The reported visit will occur after Maclin sits down with the Buffalo Bills on Tuesday.
The Kansas City Chiefs surprisingly released Maclin on Friday in a move that saved them $10 million against the salary cap, per ESPN.com.
Maclin struggled through injuries last season, as he missed four games and finished with 44 receptions for 536 yards and two touchdowns, all of which were career lows.
The 29-year-old finished with 1,088 yards and eight touchdowns in his first season with the Chiefs in 2015, however, and registered 1,318 yards and 10 touchdowns in his final season with the Philadelphia Eagles in 2014.
Despite his issues in 2016, Maclin makes plenty of sense for both the Bills and Ravens, who are in desperate need of help at wide receiver.
The former Pro Bowler would likely slot in as a starter for the Bills across from the oft-injured Sammy Watkins with rookie second-round pick Zay Jones taking on the No. 3 role.
Things may be even more dire in Baltimore with veteran Mike Wallace and the unproven Breshad Perriman as the only legitimate options.
Should Maclin leave Buffalo without a contract, Baltimore may be an attractive option since offensive coordinator Marty Mornhinweg served in that same role with the Eagles during Maclin's tenure.