Something fairly high on the planetary science wish list for the last 30 years; however:
A Europa probe, particularly if it included a lander (which would have to include an RTG power plant and therefore be quite large and heavy), would be extremely large, complex and expensive. Probably several times as much as Galileo. It would probably take the place of Cassini if launched. Since any life on Europa is under kilometers of ice (likely on the bottom of the ocean underneath), and the probe would mostly study just one object, it just wouldn't seem that good a bargain. So: possible but very costly (meaning many delays and redesigns), with the public likely thinking they didn't get their money's worth at the end.
Ways to get under the ice have been suggested, and might work, but they wouldn't be for the 20th century.