Wagner has been linked with Liverpool striker Dominic Solanke and Newcastle winger Jacob Murphy among others.

"All of them are contracted to other clubs and this is why I've no idea if we are able to bring some further players in or not and once we've done our business, or as close as we are with Jason, I will let you know," Wagner said.

Huddersfield owner Dean Hoyle has vowed not to let the club "sleepwalk towards relegation", but Wagner is not sure how active the club will be during the transfer window.

"The problem is what the meaning of busy is," he said. "If making one deal means busy then hopefully we will be busy.

"If it means more then I have my doubts, nobody knows. We'll see what happens.

"I am absolutely aware of the circumstances we have at our club. I can deal with it and manage it and we can do everything that we can do. We have to wait. We are not the biggest dog in this (transfer) window competition. We will see."

Puncheon's four Premier League appearances this season have all been off the bench, but Wagner believes the Londoner can have a big impact.

"He obviously has a very experienced profile, a leader as well, a player who is used to England and the Premier League," Wagner said.

"He can help us to strengthen our midfield area, where we are very short in numbers after all the injuries.

"He is a character off the field as well, which is what we need and I'm excited to work with him, use his experience and have another good character in our group."

The Terriers are bidding to halt a club record eight-game losing run in the third round of the FA Cup at Bristol City on Saturday and Wagner confirmed goalkeeper Ben Hamer will start in place of Jonas Lossl.

Central defender Christopher Schindler sits out a one-game ban after his dismissal in Wednesday's home defeat to Burnley, but otherwise Wagner will choose from an unchanged squad.

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