AMSTERDAM, NETHERLANDS - APRIL 13: Goalkeeper Andre Onana of Ajax Amsterdam , gestures during the UEFA Europa League Quarter Final first leg match between Ajax Amsterdam and FC Schalke 04 at Amsterdam Arena on April 13, 2017 in Amsterdam, Netherlands. (Photo by TF-Images/Getty Images)
GELSENKIRCHEN, GERMANY - APRIL 20: Andre Onana of Ajax Amsterdam celebrates after a goal during the UEFA Europa League second leg quarter final soccer match between FC Schalke 04 and Ajax Amsterdam at the Veltins Arena in Gelsenkirchen, Germany on April 20, 2017. (Photo by Leon Kuegeler/Anadolu Agency/Getty Images)
GELSENKIRCHEN, GERMANY - APRIL 20: Andre Onana of Amsterdam is seen during the UEFA Europa League quarter final second leg match between FC Schalke 04 and Ajax Amsterdam at Veltins-Arena on April 20, 2017 in Gelsenkirchen, Germany. (Photo by Christof Koepsel/Bongarts/Getty Images)
GELSENKIRCHEN, GERMANY - APRIL 20: Goalkeeper Andre Onana of Ajax Amsterdam looks on during the UEFA Europa League quarter final second leg match between FC Schalke 04 and Ajax Amsterdam at Veltins-Arena on April 20, 2017 in Gelsenkirchen, Germany. (Photo by TF-Images/Getty Images)
AMSTERDAM, NETHERLANDS - APRIL 13: Goalkeeper Andre Onana of Ajax Amsterdam controls the ball during the UEFA Europa League Quarter Final first leg match between Ajax Amsterdam and FC Schalke 04 at Amsterdam Arena on April 13, 2017 in Amsterdam, Netherlands. (Photo by TF-Images/Getty Images)
