The 20-year-old former Manchester United academy midfield starlet went into the international break by scoring a fine solo goal for the Hammers as they stunned Tottenham 3-0 at White Hart Lane. He continued his good run for England's Under-21s with a brace in Tuesday's 5-0 thrashing of Lithuania.
Morrison is now looking forward to getting back to Premier League action this weekend when title hopefuls Manchester City arrive at Upton Park.
And he sees no reason why Sam Allardyce's men can't pick up another three points against Manuel Pellegrini's expensively-assembled side.
He told West Ham TV: "I'm very excited because obviously I used to play for Manchester United but I never played against their first team, so I'm really looking forward to it.
"Of course we can cause a shock. We're a great team and we should have had a lot of goals this season, but for some reason we haven't.
"Against Tottenham we managed to get the goals which have been missing, which was pleasing. The defence has been solid so if we carry on doing what we're doing, we can cause an upset."
Punters can use their free bet to back Morrison to find the net and help the Hammers see off City in the televised early evening encounter.