The midfielder only arrived at the club from Exeter City in January.
The undisclosed fee was reported to be in the region of £1.75 million by the Daily Mail, a record fee received for a player by Exeter, and saw Swansea snap up a player considered one of England's top young talents.
The England under-20 international is a cultured midfield dynamo who has been compared by some to former Tottenham Hotspur legend Glenn Hoddle.
Now Grimes has been discussing his time with Swansea in an interview with TheFA.com.
“It’s been a crazy six months, a crazy season to be honest. I just need to keep [my] head down now and keep working hard.”
“I’m not really looking too far ahead at the moment. I know I just have to keep working hard and maybe I’ll get more chances at Swansea before the end of the season.
“I feel like I’ve found my feet at the club now and I feel like I really have to start putting my stamp on training and then hopefully when I get chances I’ll take them.”
Grimes is certainly at a great club to make his impact. He may not yet be in the first-team for the club, but he is knocking at the door. When he does make the grade he is likely to play plenty of regular first-team football.
The Swansea starlet made his debut yesterday, coming in for Jonjo Shelvey in the 90th minute. With Tottenham loanee Tom Carroll out for the rest of the season, he can expect to make several more first-team appearances before the current campaign ends.