The Glovers have allowed Dan Seaborne to link up with Sky Bet League One outfit Coventry City on loan, and that agreement could be extended, while striker Paddy Madden has been made available.
Johnson says he will be open to offers in the New Year, with departures freeing up space for possible arrivals.
He said in the Western Gazette: "Dan Seaborne is already at Coventry and I think they're looking to maintain that. We've got to look at that depending on our situation at the time.
"It depends who it is, but if anyone comes in for one or two of the others, we will have to consider it."
While prepared to discuss outgoings, Johnson is hoping there will be positive news on the incoming front - with loan extensions being sought.
Yeovil currently have Everton duo John Lundstram and Shane Duffy on their books, while Liam Fontaine and Ishmael Miller have been taken off Bristol City and Nottingham Forest respectively.
Johnson added: "It depends. We're looking to renew first and then see what we have got after that.
"It's not easy to get hold of some managers at this time of the season when they are flitting and flirting with training, Christmas and their families.
"The Everton lads we have certainly gone down that road a bit further. We will have to make contact with the other clubs and their representatives as quickly as we can.
"There's been initial contact but they have said to wait until later in their loan."