Leeds United are expecting a tough January transfer window.
Bielsa admits that he is expecting Leeds to struggle to add players in the new year.
But Bielsa is looking forward to welcoming back Patrick Bamford, Izzy Brown, Luke Ayling and Gaetano Berardi - all of whom he thinks will be like new signings.
He said: “It will be very hard to add new players. But we will have four more players coming in January, Bamford, Brown, Berardi and Ayling.
“It’s only my opinion. The club can have a different opinion and I will take that into account.”
Leeds have struggled with injuries over the early part of the campaign, which has stretched their squad.
Bielsa’s side have coped well with the demands of the Championship so far, with Leeds currently right in the thick of the promotion battle.
However, whether they will have the depth to last the entire season remains to be seen.
Leeds are next in action at the weekend when they take on West Bromwich Albion at the Hawthorns on Saturday.
If the Whites can pick up a victory they could extend their lead at the top of the Championship table.