Saab planning vehicle based on Opel Astra?

Saab is considering building a new compact car based on the next-generation Opel Astra, according to Reuters. The car would be built in Sweden and aimed at the BMW 3-Series. It's not clear how much the car would share with the Astra, but we suspect its body style would be unique. Recently, we reported that GM may bring the Astra over to North America and badge it as a Saturn to replace the Ion.