I remember I had duffy in PES2010 he rose from my youth team, and the way you describe him he definitely was the same guy. Played him a few seasons and sold for profit
I at least thought that he is a different dude to Everton Duffy.. Back in PES2010 I used to have duplicate players in ML, Like Maynor Figueroa and Mayl Fedela (unlicenced same guy). This might be the case with your Duffy there I'm not sure.. (That he rose from international teams to youth team).
EDIT: to answer alainvey next post. Players rise from all teams youth teams.. I just got "lucky" to have him from my youth team back in PES2010
I at least thought that he is a different dude to Everton Duffy.. Back in PES2010 I used to have duplicate players in ML, Like Maynor Figueroa and Mayl Fedela (unlicenced same guy). This might be the case with your Duffy there I'm not sure.. (That he rose from international teams to youth team).
EDIT: to answer alainvey next post. Players rise from all teams youth teams.. I just got "lucky" to have him from my youth team back in PES2010