Leeds United defender Pontus Jansson was not fit enough to feature in the first-leg of the play-offs.
Leeds had to do without Jansson for the first leg of their play off with Derby County, but he could be involved again on Wednesday evening.
The £3.5 million centre-back (Yorkshire Evening Post) is in a race against time to be fit, and if he does return for Leeds then it will be a huge boost.
But Bielsa also insists that he trusts Gaetano Berardi to perform if called upon.
“What we see about Jansson is his physical strength,” Bielsa said.
“He has a big capacity to express his presence in the game and for Berardi he has an expository which is not frequent for a centre-back.
“Jansson has been our best player in the Championship over the season and Berardi has been an indispensable player. And we couldn’t count on him when he was absent.”
“Both are compatible, we need them both and we can rely on them.”
Berardi started alongside Liam Cooper for Leeds in the first leg of the tie.
The defensive pair impressed, as Leeds kept a clean sheet and won 1-0 at Pride Park.
Leeds are now in a strong position to make it to the final, as they have a lead to protect at Elland Road.
The Whites are yet to be beaten by Derby this term, with Frank Lampard’s side losing all three times the two sides have met.
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