✅ Bet we had you guessing! We’re delighted to announce that @pritch_93 joins #htafc from @NorwichCityFC for an undisclosed fee, signing a three and a half year deal 📝 https://t.co/bRkfG5Jwkx (AT) pic.twitter.com/SQ30ClNv4U

— Huddersfield Town (@htafc) January 12, 2018

Pritchard could make his Terriers debut in tomorrow's home Premier League game against West Ham.

"Huddersfield Town has today completed the permanent transfer of Alex Pritchard from Sky Bet Championship side Norwich City," read a club statement.

"The 24-year-old moves to Yorkshire for an undisclosed fee, putting pen to paper on a contract running until the summer of 2021, with a further year's option in Town's favour."

The Terriers are reported to have paid between £10-£14m.

Head coach David Wagner said: "I'm very happy to be able to welcome Alex to Huddersfield Town.

"He is exactly the type of player that we like to work with at this club. Alex is a young British player who arrives as one of the top performers in the Sky Bet Championship and with a desire to prove himself in the Premier League.

"Now we will work hard with him to give him every possibility of being a success for us in the top division.

"I'd like to thank (chairman) Dean Hoyle and the board for being as supportive as ever in this transfer window and making this transfer possible."

Pritchard progressed through West Ham's academy before switching to Tottenham aged 16 in 2009 and, after loan spells at Peterborough and Swindon, made his Premier League debut as a substitute in the final game of the 2013-14 season.

The former England Under-21 international spent the following season on loan at Brentford and made his second and final appearance for Tottenham early in the 2015-16 campaign.

After a brief loan spell at West Brom, Pritchard completed a permanent move to Norwich for a reported fee of £8m in August 2016.

He made a total of 43 first-team appearances for Norwich, scoring eight goals, and becomes Huddersfield's second January signing following the arrival of Terence Kongolo on loan from Monaco.

Both Pritchard and Kongolo could feature against West Ham, who currently sit four places and two points behind Huddersfield in a congested bottom half of the table.

The significance of another three points and a possible fifth home league win of the season for the Terriers is not lost on striker Laurent Depoitre.

"The game on Saturday is very important because it's against a direct opponent and it's at home, so we have to win this game," the Belgian said.

"We know against the big teams it's difficult to take points, so we have to take points against teams around us in the table."

Huddersfield turned in a below-par display when beaten 2-0 at the London Stadium in September.

"We have to show something better than in the first game against them because we were not good enough," Depoitre added.