Never heard of him. I am assuming that a guy who has been in the minors that long with decent stats must not have great stuff?
Via mlbtr:
The right-handed Finnegan has spent the entirety of his professional career as an Athletics farmhand. In 2019 he recorded a 2.31 ERA with 14 saves while splitting time between Triple-A Las Vegas and Double-A Midland. The 28-year-old showed a huge uptick in strikeouts after a 2016 migration to the bullpen, as evidenced by his 72 Ks in just 52.2 innings of work last year (12.8 strikeouts per nine).