Sunderland defender Titus Bramble is convinced there's more to come from new teammate Asamoah Gyan.
The World Cup star netted a stunning volley at the DW Stadium and has already been impressing Bramble and his team-mates on the training ground.
"Asamoah is a fantastic player," Bramble told safc.com.
"People haven't seen too much of him apart from the World Cup but we have seen what a talent he is on the training ground.
"Hopefully he can score a lot of goals for this club."