New Delhi, April 17 -- Ollie Watkins scored again as Aston Villa knocked out Bologna out of the Europa League in a 4-0 rout Thursday to set up an all-English semifinal against Nottingham Forest.

Unai Emery's team reached its second European semifinal in three seasons with a 7-1 aggregate victory.

Watkins had netted twice in last week's 3-1 win in the first leg of the quarterfinal in Italy, and the striker set the pace at Villa Park.

He tapped in a low cross from the left provided by Morgan Rogers for a 1-0 lead after 16 minutes for his 100th goal for Villa.

Rogers had a golden opportunity to increase the lead but Bologna goalkeeper Federico Ravaglia saved his penalty kick.

Only a minute later, though, Villa doubled its lead when Emil...