According to a report by Handelsblatt

And the political games begin... Do be reminded that Oettinger is a German and if Merkel is aiming to seat a German for the European Commission president post instead of the ECB, of course they will push for France to take up the ECB role when Draghi leaves in October 2019.

After all, that kills off any realistic competition for the European Commission president post while at the same time having an ally of sorts at the ECB as well. Not sure how well this will go down with Macron though. He's been rather quiet about this so far.