The England striker returned for a second spell at Fratton Park following an £11million transfer from Liverpool.
Crouch is likely to form a little-and-large partnership with Jermain Defoe as Pompey look to build on their FA Cup triumph and he cannot wait for the action to get under way.
great feeling
Ahead of Sunday's United match, he told the club's official website: "I've got good memories of the Community Shield - I scored the winner in it two years ago when Liverpool beat Chelsea 2-1. I was right by all the Liverpool fans and ran to them - it was a great feeling.
"Sunday is going to be a really difficult match but we will be fit and ready and hopefully we will give them a good game. I think we have had a good pre-season so hopefully we can continue the way we have been and start the season well."