With Holloway still in the market for a winger, he has instead chosen to opt for former Stoke and West Ham man Matthew Etherington, who is available for free since leaving the Potters this summer.
Despite the transfer window closing last week, Football League clubs are allowed to sign un-contracted players, and 33-year old Etherington would fit the bill perfectly - bringing talent and experience to a Lions team looking to fight for promotion from the Championship this season.
Despite holding talks with a number of Premier League clubs during the summer, the winger could not complete a deal, it has been confirmed that Holloway has spoken to the players agent.
The former Crystal Palace coach said: "I've got some room to add to the squad if I want to.
"I'm getting all sorts of people ringing me up – quality players – asking to come to Millwall.
"I've got an idea mulling through my head at the moment and I'm weighing that up.”
Concerning the Jermaine Pennant situation, Holloway revealed that the fellow-former Potter wasn’t to blame for leaving the club - claiming that his agent was demanding too much from the club.
"His agent kicked in and said he wanted this and that. It probably wasn't even the boy himself.
"He's not training with us anymore because his agent has told him not to. I thought he was enjoying it and he was looking better every day.
"He was getting fitter and his chances of getting a contract from me were looking good. But if that's what his agent wants, and he doesn't want to train with Millwall, that's up to them.”
It is unlikely that a deal for Etherington could be completed in time for this weekend, and so the thrice-capped England Under-21 international could potentially make his debut next Saturday - when the Lions face league leaders Nottingham Forest at the Den.