In the European session, the only highlight is ECB's Schnabel speech. She has a neutral/hawkish stance and has already said that rates are already mildly accomodative and the risks to inflation are to the upside. She also noted that rate hikes could come earlier than people think. Therefore, don't expect anything new from her.
In the American session, we have a couple of low tier and volatile data like the Canadian manufacturing sales and the NY Empire Manufacturing PMI. They won't change anything in terms of market pricing and most likely will be ignored. We have also ECB's President Lagarde speaking later in the evening but again she's not going to offer anything new given that she already said everything at the monetary policy press conference last Thursday.
Finally, keep an eye on WSJ's Timiraos who generally writes an article on the Fed before Wednesday's decision. Mentions of a 50 bps cut being considered by the FOMC will likely raise the probabilities for the larger move.
