While much of the paper-talk is currently about Manchester United's Champions League tie against Bayern Munich, their Premier League rivals Chelsea have another match to think about - one that could go a long way to seeing if Jose Mourinho can do with the Blues what he has previously done with both FC Porto and Inter Milan.
On Wednesday evening, Chelsea will face Paris Saint-Germain in the first-leg of their quarter-final tie, and Willian has posed a picture on Instagram of him and some of his teammates on the way to the French capital.
Along with the Brazilian midfielder are his fellow countrymen Oscar, Ramires and David Luiz and Blues striker Demba Ba.
They look pretty happy on the outward journey. But the players and Mourinho will be hoping their smiles are even broader on the flight back to London.