“After their very good season in the Premier League, it shows that we’re going to be up against a team that is very well prepared.”

Leeds are bidding for back-to-back league wins following last week’s 4-3 victory against Fulham at Elland Road.

The Blades have yet to register a point after successive defeats to Wolves and Aston Villa, but last season’s top-10 finish impressed Bielsa.

“It’s very clear the importance of what Sheffield United have done,” said the Argentinian.

“First getting promoted and then the season they have just had in the Premier League.

“They are a team with a particular style of play, which is ingrained and well-oiled, and they have a very, very good manager.”

Wilder guided the Blades from Sky Bet League One to the top flight in three years and has largely kept faith with the same group of players.

“He’s been able to ingrain his ideas into his players and they clearly feel comfortable in the system that is being imposed,” Bielsa said.

“This is one of the virtues of a good manager and coach, someone who’s able to ingrain his ideas on his players to make it look comfortable.

“They are a practical team, very difficult to face, and I feel the game on Sunday is a big challenge for us.”

Leeds midfielder Pablo Hernandez remains two weeks away from a return to action after a groin strain, but Bielsa has no new injury concerns.

Bielsa said new signing Diego Llorente was available to play, but it remains to be seen if he will be included in the squad after completing his £18million move from Real Sociedad this week.

“He was due to play against Real Madrid just before his transfer was agreed, and if he was ready to play against Real Madrid he is sufficiently prepared to play for us,” Bielsa said.

“But it is true that this week has been atypical for him and he will need to meet his team-mates and adapt a little bit more.”

Spain centre-half Llorente is Leeds’ fourth major summer signing following the arrival of forward Rodrigo, defender Robin Koch and Helder Costa, whose loan deal was made permanent in July.

Bielsa added: “There is likely to be a couple more incorporations into the team, but in the case that they don’t come we will adapt.”

– Promising Leeds midfielder Alfie McCalmont has joined Oldham on loan for the season.