"The harder you work, the better the results".
He grabbed his third goal in four games yesterday just a few weeks after Hammers waned him out and even he had his agent working over-time to find an escape route.
Arnautovic is playing in his first season for the Hammers.
West Ham United manager David Moyes said he had no qualms about signing Patrice Evra and that he understands why the defender kicked a fan who abused him. Michail Antonio has done a bit more training and Marko Arnautovic has done a bit of training this week.
West Ham are still not safe from the drop - they are three points above the bottom three - but Sullivan is backing his manager.
Javier Hernandez has admitted that he wanted to leave West Ham during the January transfer window in a candid interview with Sky Sports. Over their last seven games, the Hammers picked up 10 points to move into 12th in the Premier League with 27 points. Hopefully we'll get him ready as quickly as we possibly can and see if he's ready to play.
PM Modi arrives in Jordan during his three-nation West Asia tour
He will proceed to the venue of the World Government Summit where he will deliver a keynote address. Modi will straightaway head for a large community event at a stadium in the Omani capital.
He made his return to the starting XI against Watford at the London Stadium and capped a fine individual display by scoring the second goal in a 2-0 win.
He went off late to thunderous applause, kisses from his bench and the man on the tannoy calling him "Marko the Magician".
But when Arnautovic, fit again after three games out injured, began to get on the ball West Ham looked a totally different team, especially to the one which surrendered so meekly at Brighton last weekend.
It can not be forgotten that there are deep-rooted problems at West Ham right now. "In the Chelsea game we were running and fighting, and today we didn't do it enough", Watford manager Javi Gracia told reporters after the game.
Up next for West Ham in the Premier League is a trip to Anfield to face Liverpool on February 24.
In fact, they have only earned one point and scored two goals in six away matches since beating Newcastle in November.