Jimmy Keinhorst and Rowan Milnes have returned to Hull KR from their loan spells at York and Bradford respectively.
Keinhorst, 30, joined the Championship club on a season-long deal for 2020 and scored two tries in five appearances for the City Knights.
They have now confirmed he will return to his parent club for the remainder of the season.
GOOD LUCK to Jimmy Keinhorst, who has returned to parent club Hull KR for the remainder of the 2020 season.
— York City Knights⚔️ (@YorkKnightsRLFC) September 4, 2020
The Germany international made 25 appearances for the Robins in 2019, scoring seven tries.
Meanwhile, Milnes was one of five players signed from Bradford in the off-season, with the young stand-off staying with his hometown club to gain more experience.
CEO Mike Smith said: “I would like to thank Mark Sawyer and John Kear from Bradford Bulls and Jon Flatman and James Ford from York City Knights for their co-operation in making this happen.
“We have a great relationship with both these clubs and therefore the process was easy and seamless.
“Tony (Smith) asked to strengthen the current squad and it made total sense to bring our own players back home first.”