Just when you thought the dearth of mergers and acquisitions (M&A) in Europe was here to stay, Germany's Bayer sweeps in with a $62 billion bid for U.S. agrichemicals giant Monsanto.

Not only would the tie-up create the world's largest agricultural supplier, more significantly for the region, it would reportedly be the biggest outbound takeover by a German corporate on record. It could also mark the start of a flurry of deal-making across the continent.