The signing of Charles Sagoe Jr on deadline day means Swansea City have six loan players in their squad for the rest of the season.
However, EFL rules only allow five loan players to be included in a matchday squad.
Therefore, one of Carl Rushworth, Bashir Humphreys, Harrison Ashby, Charlie Patino, Jamal Lowe and Sagoe Jr will not be involved each time Swansea play.
But head coach Luke Williams is unconcerned about potential selection headaches.
“We have to prepare now for a tough period of football without windows,” he said.
“The notion that we’ll always have a fully fit squad and the loan players will all be available is probably unrealistic.
“There will be one or two decisions to make on who will miss out but I don’t see it being a huge problem.”
For the moment, at least, there is no issue, with forward Lowe expected to spend at least a few more weeks on the sidelines with a knee injury.
Ashby is also a doubt for Saturday’s meeting with Plymouth Argyle after coming off at Leicester in midweek.
“With Jamal’s injury, it made sense [to sign Sagoe Jr] because you can never guarantee a smooth return to play,” Williams added.