Paul Clement has admitted that he must rectify the "imbalance" in Swansea City's first-team squad when the January transfer window opens.
The Swans' head coach told BBC Sport that he would be looking to add cover at left-back for Martin Olsson, after agreeing with claims that his squad was too thin in some areas and bloated in others.
The arrival of Sam Clucas from Hull City and Renato Sanches from Bayern Munich in the summer brought Clement's options in the centre of midfield to seven, while Olsson remains the only senior option available to Clement in the left full-back role.
With very few other players able of playing in Olsson's absence, Clement suggested that he would look to bolster that area of the field when the winter window opens at the turn of the year.
He said: "The balance is slightly off because we're a little bit heavier in midfield than we would like.
"We're a little bit short at the back, particularly the left-back spot. Martin [Olsson] is playing and who's pushing him? If there is an issue, who would be able to step in?
"You'd be asking a player who's not a natural left-back or you go down into the next level at your club. We've got a slight imbalance there."
Clement did have back up to Olsson in the shape of Ben Kingsley ahead of the 2017/18 campaign, but the young defender was part of the deal that saw Clucas head from Humberside to South Wales in August.
That means that any injury or suspension handed to Olsson would leave Clement with a selection headache, and the ex-Bayern Munich assistant boss added that he would not be free to moan if the Norway international became unavailable for an extended period of time.
He said: "I've got the squad I have until 1 January, so no complaints or whingeing or moaning about it.
"I've just go to get on with it and maybe then we can address some of the balance issues when it comes to January. Maybe."