By Lanre Banjoko:
Congo Democratic Republic forward Paul Mpoku opened scoring for Liege on 15 minutes, while Agbo make the points safe by scoring the second nine minutes from time.
Standard Liege shot to sixth position in the table with the away win.
Agbo who joined Standard Liege from Spanish club Granada this summer has made seven appearances in the league for the club since the switch.
He was not in action during Nigeria’s qualifying campaign for the Russia 2018 World Cup despite being a regular invitee to the team in recent times.