Germany midfielder Ilkay Gundogan has admitted that he was impacted by the boos from German fans in recent friendly matches.
Gundogan, along with his teammate Mesut Ozil, was the subject of great controversy when he met with Turkish president Recep Tayyip Erdogan.
The relationship between Erdogan and Germany is very strained, which is part of the reason for the backlash.
Gundogan presented Erdogan with a signed shirt, which said "my president" on it. Fans did not take that gesture too well either.
"Whatever justified criticism there might be, we decided on a gesture of politeness, out of respect for the office of president and for our Turkish roots," Gundogan said in an interview with Arab News about the incident.
"The reactions affected me, especially the personal insults.
"I feel privileged to have grown up in Germany, so it was a heavy blow for me to be portrayed as somebody who isn't integrated and doesn't live his life according to German values."