Chris Morgan says he won't be afraid to go with youth in the play-offs if he believes it gives the Blades the best chance of winning promotion.
Several youngsters featured in the 1-0 defeat at Crewe on Tuesday night and Morgan was pleased with what they contributed to the performance.
An injury in the first-half forced Morgan into a half-time reshuffle and in the second-half both Jordan Chapell and Joe Ironside were handed an opportunity to impress.
Taking the positives from the reversal, Morgan commented: "Danny (Higginbotham) had a tweak in his hamstring, so we had a look at Callum (McFadzean) at left-back and we have to be able to adapt.
"In the play-offs everyone will have a part to play; we need a good blend of youth and experience, but most of all we need legs. Callum was excellent, both as a winger and at left-back; he showed great maturity again to be able to change positions.
"Joe (Ironside) was excellent again. For a young striker he puts himself about, creates problems and doesn't give defenders an easy time.
"All the youngsters are capable, if selected, but ultimately we have to pick a team capable of getting us promoted."
Turning his attentions to the game that will bring the curtain down on United's regular season, Morgan concluded by insisting a win over Preston North End at the weekend is imperative:
"On Saturday we are at Bramall Lane and we have to go out there and put on a real performance. The supporters, rightly so, will expect us to be ready for the play-offs and I can assure them we will be.
"We still want to finish as high as possible, let's get all three points and see where that takes us."