"We scored a lack of goals last season so we thought that maybe they should play together because Gabriel, when he came, was also striker". Miguel Britos serves the second of his three-match ban after being sent off against Brighton.
But he is unlikely to play a part against Watford.
Englishman Andre Gray could lead the line, as he did against the Saints with the young Brazilian Ricarlison pushing up on the left and Carillo on the right.
For City, Vincent Kompany won't be available after picking up an injury during the global break.
In the absence of the Belgian defender, Nicolas Otamendi and John Stones are likely to continue as the central defensive pairing, with Benjamin Mendy and Kyle Walker the full-backs on either side of the duo.
Liverpool struggled at times last season without Mane and it appears little has changed.
Sergio Aguero celebrates his second on the day.
The Hornets have lost all four games against tomorrow's opponents since they arrived back in the Premier League two seasons ago.
"We're unbeaten with eight points from four games so it's a fantastic start to the season".
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"There are plenty of goals in the team", he told United's website.
Whilst Sergio Aguero completed his hat-trick with a stunning fifth goal of the game.
Back to the drawing board for Marco Silva.
And the Belgium worldwide insisted that there would be no let-up against the Hornets because there are always other players pushing for a starting XI place. Watford FC is now ranked 4th in the Premier League standings with 8 points.
The Portuguese pulled off an incredible display against Liverpool in a insane 3-3 draw to start the season, with last weekend's long-range efforts from Abdoulaye Doucoure and Daryl Janmaat against Southampton bringing their fans another three points to cheer.
Newcastle United recorded a third successive win by beating Stoke City 2-1 at St. Jame's Park. "I'm really happy with our start, especially the last match to play like we played".
"Watford is just two points behind us", he added. Aguero doubled City's advantage before Gabriel Jesus made it 3-0 at half time.