Celtic have completed the signing of Parma midfielder Oliver Sorensen on loan shortly after assistant manager Shaun Maloney suggested the Scottish champions were working on up to four additions before finalising their Europa League squad on Wednesday.

Sorensen will spend the season in Glasgow, with Celtic having an option to buy the 24-year-old who signed for the Italian side in August 2025 after five years with Midtjylland in Denmark.

Celtic have signed four first-team players so far this window and have also been linked with Wolverhampton Wanderers goalkeeper Sam Johnstone and PSV Eindhoven midfielder Joel van den Berg.

Maloney hopes another left-back can be recruited to compete with Scotland international Kieran Tierney, while “it’s possible” Japan midfielder Reo Hatate could move on and Sorensen will help fill the void created by Arne Engels’ sale to West Ham United.

“There’s some key positions that we still need a bit of work on in the next couple of days,” Maloney said before Wednesday’s Scottish Premiership visit by Aberdeen.

“There’s certain things that Arne brought that we need to replace and the quicker we do that, it gives us just that extra dimension, extra speed, extra power within that midfield because I think technically we’ve got some brilliant players. I think we just need that slightly different profile, which we need in certain games.

“Kieran’s started the season really well. You never quite sure how this season’s going to go with all the World Cup guys because of such a short break. We need that back-up in that position. We need somebody to keep challenging KT.

“That’s a position that we’ve really needed to fill and with the right type. We need the right profile of player in there.”

Maloney was asked about the possibility of Celtic signing 18-year-old Chelsea forward Shim Mheuka on loan and said “it’s pretty difficult to talk about” prospective signings and “nothing’s confirmed with anyone”.

“Any signing in that striker area, it’ll either transpire in the next 24, 48 hours, or we’ll just go as we are,” Maloney explained.

On Hatate, who has scored 33 goals in 191 Celtic appearances since joining in January 2022, Maloney commented: “He’s a brilliant player.

“What he’s done at the club has been really, really good. He’s won many titles here.

“If he does move on then he’ll remember how good a player he was for this club.”

The Scottish transfer deadline is on Thursday at 17:00 BST, with the Europa League squad to be registered by Wednesday at 23:59.

“All the guys that we’d be looking to try and bring in, with that European deadline we want to try and get them in the squad if we can,” Maloney explained.

“We’ll be looking to strengthen that squad, particularly European squad for that deadline.

“Some really key positions in the squad, you’re looking at three or four and, if there’s anymore than that, that’ll be really, the thinking of the club will be for the future.”