A fierce shot from Andre Gray on 65 minutes, following Abdoulaye Doucoure's cut-back, ignited the second half but United held on with David de Gea saving impressively from Christian Kabasele's header in the final seconds. "The only thing that is clear for me is that the player never - in all these days we are together - he never told me that he wants to leave".
"I'm focused on my job and trying to help my team, trying to improve every session and trying to be as good as I can".
Sunday's strike meant that Lukaku has now scored 4 goals in 5 appearances for United this season, and the striker was quick to credit as well as constructively criticise his teammates.
Meanwhile, NAIJ.com previously had reported that two first half goals from Romelu Lukaku (35' minute) and Chris Smalling (38' minute) was all that Manchester United needed to continue their two-game winning run against Watford on Saturday, September 15.
"I feel really loved by the fans and all the people who work for this club", he added.
"I am really happy to play for this club, one of best clubs in world, so for me it's really good to be part of this club".
Watford went close to breaking the deadlock when Troy Deeney forced David de Gea to tip over just after the quarter-hour mark.
"It is premature to be speaking about our chances when we didn't even play the first match", Mourinho told a news conference on Tuesday.More news: Feinstein's opponent seizes on her role in Kavanaugh fight
"It's obviously hard [watching the World Cup], I am not going to lie", said Smalling.
They face Swiss side Young Boys in the Champions League on Wednesday night, before hosting Wolverhampton Wanderers on Sunday.
"Getting two wins on the bounce and coming into a month where there are so many games, I think we are building momentum at the right time".
Andre Gray pulled a goal back midway through the second period but it wasn't enough to preserve Watford's ideal start to their English Premier League. It's such a special competition.
We are in a hard group, starting tomorrow with a hard team.
"But no, in the beginning of the second half we let the game go down in intensity, we stopped to be aggressive with and without the ball".
"We knew that, but they have quality, they have confidence because they won the first four games".