Bayern Munich in 2014 On November 8, 2013, Green signed a professional contract with Bayern Munich to stay at the club until 2017. Green made his professional debut on November 27, 2013, coming on in the 88th minute of a
UEFA Champions League game against
CSKA Moscow as a substitute for
Mario Götze. He was named in Bayern's squad for the
2013 FIFA Club World Cup, as a late replacement for the injured
Arjen Robben. He finished the 2013–14 season with an appearance in the UEFA Champions League and 15 goals in 23 appearances for the reserve team. Green was listed as a member of the first team for the 2014–15 season.
Loan to Hamburger SV On September 1, 2014, it was announced that Green would be on loan with
Hamburger SV for the 2014–15 season. In February 2015, the German newspaper
Bild reported that Green had been demoted to
Hamburger SV II, HSV's reserve side that plays in the fourth tier of German soccer. Green, who had been limited to 113 first-team minutes all season, denied the report and the club press officer said he would play with HSV II "a couple times when he is not in the first-team squad" to get more game action and match fitness, but that he was still training with the first team.
Return to Bayern On August 20, 2015, Green was demoted to
FC Bayern Munich II. He made his first appearance of the season the next day, playing right back against
SV Schalding-Heining. On October 23, he scored a hat-trick against
FC Augsburg II. Green started a Champions League match for Bayern Munich against
Dinamo Zagreb in December, playing 62 minutes. It marked his first appearance with the first team in over two years. Green returned to the first-team after new manager,
Carlo Ancelotti, included him in the preseason squad. During the second game of their U.S. tour, Green scored a hat-trick in the first 35 minutes, helping Munich to a 4–1 win over
Inter Milan. Following an international break in which Green scored two goals in two successive matches, Ancelotti hinted that the player could be receiving a "chance to play in the next few games". That chance came on October 26, 2016, when Green scored his first competitive goal for Bayern, coming against
FC Augsburg in a 3–1 victory in the second round of the
DFB-Pokal, making him the first American to score for the club. To that point in the season, despite being regularly named to the squad for Bundesliga matches, Green had only made a substitute appearance in the Pokal, against first round opponent
Carl Zeiss Jena.
VfB Stuttgart On December 21, 2016, Green moved to
2. Bundesliga club
VfB Stuttgart on a two-and-a-half-year contract for an undisclosed fee, effective January 1. He made his debut on January 29, playing the first half of a 1–0 win at
FC St. Pauli before being substituted for
Carlos Mané, and eight days later he scored his first goal in a 2–0 home win over
Fortuna Düsseldorf. He finished the season with ten appearances, and his team won the league title.
Greuther Fürth On August 31, 2017, Green was loaned out to
SpVgg Greuther Fürth in the second division until the end of the season. On May 13, 2018, he scored the goal which saved the team from relegation to the
3. Liga in a 1–1 draw against
1. FC Heidenheim and finished out of the relegation playoff position on goal difference. He finished the
2017–18 season with three goals in 24 appearances. Green stayed with Greuther Fürth following the expiry of his loan, signing permanently for the club on June 17, 2018, inking a two-year contract. On August 12, 2023, in a first round match in the
2023–24 DFB-Pokal, Green was racially abused while playing against
Hallescher FC in
Halle, Germany. ==International career==