The 19-year-old is now making good progress and the Gunners are hopeful he will be fit to play again in the autumn.
His international team-mate Gunter is also looking forward to welcoming him back into the Wales fold.
''I saw him last Sunday, he's doing really well,'' said Gunter, the Nottingham Forest defender.
''He is hoping to start running in a few weeks, then there will be three or four more weeks before he can kick a ball.
''He's over the disappointment now, and he is focusing on getting back.
''It was a terrible thing to go through, but one I am sure that in years to come he will look back and say it made him stronger.''