Team boss Silva, however, seemed pleased with Everton signing Alex Iwobi after he confirmed that his team did miss out an opportunity to rope in Zaha.
Celtic slumped to a 3-1 defeat against Red Bull Salzburg despite taking the lead in Austria.
It seems that Aubameyang is yet another one to join the Nigeria kit bandwagon.
Alex Iwobi netted the team's second goal in the 56th minute to secure the three precious points.
The 26-year-old last week became the most expensive signing in the history of the club.
Arsenel midfielder Alex Iwobi said the Frenchman deserves more respect from the fans.
