The 30-year-old catcher has a career .274 batting average in the minor leagues over nine seasons and has not played in the major leagues since 2018.

Maxwell, 29, was part of the Mets' 60-man player pool in 2020, but he hasn't played in the majors since 2018. Most likely, he'll begin 2021 as minor league depth, assuming there's a minor league season.

Maxwell arrived in New York on Monday for tests. Best known for becoming the first MLB player to kneel during the national anthem, the 29-year-old hasn't appeared in affiliated baseball since the end of the 2018 season when he was let go by the Athletics. He pleaded guilty for disorderly conduct in April of 2018 as part of an incident in which he was accused of pointing a gun at a delivery person's head. Assuming the deal becomes official, Maxwell will work out at the Mets' alternate training site.

Maxwell's on-field production took a significant downturn in 2018, with the catcher slashing .219/.300/.281 in 200 plate appearances at Triple-A Nashville and faring even worse in a smaller sample at the big-league level. He was also sentenced to two years' probation last July stemming from an offseason arrest on a gun charge, an incident that may have contributed to the lack of interest he received from MLB teams this winter. The 28-year-old will now look to jumpstart his career south of the border.