Since 2008 Aya also received a shirt number from the first team, No.43 (vacated by Paolo Pincio) and no.41 (vacated by Tagliani) in 2009–10. Aya was eligible to UEFA List B criteria since 2008 (until a possible 2011–12 edition), thus he was included in the List B squad for Viola in 2008–09http://www.uefa.com/uefachampionsleague/season=2009/clubs/club=52817/squad/index.html and 2009–10 UEFA Champions League.
