Udinese finished 4th in Serie A behind Champions Juventus and the two Milan teams. They will be in the Champions League next season if they come through a qualifying round.
Last season Lazio visited Ninian Park and went away 3 - 2 winners.
The ticket office are selling a double match package with tickets for Udinese and WBA priced at £20 for the pair if bought together. Individually the games are £12 in advance at £14 on the day. Concessions are half price.