Portuguese champions Porto have completed the signing of West Ham's Felipe Anderson, Liverpool's Marko Grujic and Chelsea's Malang Sarr on season-long loan deals.
Although the transfer window closed for English clubs signing players from abroad on Monday, the window in Portugal is still open until 25 October.
Brazil international Anderson, 27, joined the Hammers in a deal worth up to £36m in 2018 - a club record fee at the time.
The midfielder failed to start a match for West Ham this season.
"Liverpool were keen for midfielder Grujic to move on a permanent basis but, after bids for Grujic from the Bundesliga failed to meet their valuation on transfer deadline day, they were happy to loan the player to the Portuguese champions," BBC reported.
Grujic, 24, will join up with Porto after international duty with Serbia.
"There is no option to buy included in the loan deal but the chance of Grujic playing for a club in the Champions League is seen as an attractive proposition for both the player and Liverpool," it added.
French defender Sarr, 21, only joined Chelsea in August, signing a five-year contract after leaving Nice when his contract expired.
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