Shelbourne's link with Hull City has had an instant pay-off with midfielder Harry Wood joining on loan for the remainder of the season and goalkeeper Harry Fisk signing a permanent deal.
The Reds are under the new ownership of Acun Ilicali - and the Hull chief explained last week that there will be player movement between both clubs.
Wood, a 20-year-old central midfielder, was previously with Manchester United's academy before joining Hull's equivalent at under-16 level.
He made his senior debut for the club in the final game of the 2020/21 season, when Hull celebrated winning League One.
He played for the club against Wigan in August 2021 before joining League Two outfit Scunthorpe on loan, where he made 13 appearances.
On his return to Hull last season, Wood was a regular in the under-21s before making his Championship debut in the final game of the campaign against Luton Town.
“We are very happy to have Harry Wood in the building," said Damien Duff.
"He has a high level of technical ability and he will no doubt improve our squad.
"We were impressed with everything we heard and saw of Harry and were even more so after training yesterday.
"He is very honest and hard working and will fit nicely into our culture.”
Wood is hoping to help the Reds achieve a top four finish and possible European qualification.
“I’m delighted to join Shelbourne FC on loan, I can’t wait to get playing," he said.
"As soon as I heard I had the chance to come here, I jumped at it.
"I am looking forward to it, working and learning from Damien Duff and his staff, it’s an unbelievable opportunity to learn new things and improve my game especially under the management.
"Damien and Joey (O'Brien) have played at the highest level of football and to work day in and day out under them and the staff is an unbelievable opportunity, the League of Ireland is a competitive league and Shels are a great club with brilliant supporters so I’m looking forward to putting the Red shirt on and doing the best I can.
"I want to try to help the club get European football, which would be a massive achievement.”
Meanwhile netminder Fisk, 20, is added to the squad following the departure of Scott van-der-Sluis.
Fisk joined Hull's academy at under-14 level, then signed his first pro contract with the club two years ago.
He had loan spells at Spalding United and Tadcaster Albion during the 2021/22 season, then returned to Tadcaster Albion on loan last term.
“Having another goalkeeper in the building was a big focus after our recent departure," said Duff.
"Harry Fisk comes with great pedigree and we are delighted he is here. He trained very well yesterday and has settled in quickly.
"He has great shot stopping abilities aligned with being very talented with his feet. Harry is a brilliant addition to the squad.“
Fisk reacted: It’s been a hectic few days but I’m delighted to be here as a Shelbourne FC player.
"Having spoken to the gaffer and others connected to the club I couldn’t wait to get over here.
"Having the opportunity to work with Damien Duff and the coaching staff was a massive pull and I’m looking forward to putting on a Shels shirt and giving my all for the fans.
"It’s a new challenge and one I’m looking forward to. I want to develop as a person and a player and I feel that Tolka Park is the perfect place for me to do that.“