Which league has the Doncaster Rovers football club, featuring midfielder James Coppinger, been in since the 2016-17 season?
James Coppinger: James Coppinger (born 18 January 1981) is an English professional footballer who plays as an attacking midfielder for Doncaster Rovers in League One. Doncaster Rovers F.C.:  The team competes in League One, the third tier of the English football league system, after promotion from League Two in 2016–17.
League One, the third tier of the English football league system,