Young Lions held to a draw at Calmont RoadMillwall's U21 Development Squad were held to a 0-0 draw by Sheffield United at Calmont Road on Monday afternoon.
It was a game of few clear-cut chances but both sides did manage to hit the woodwork in chilly conditions in Bromley.
"In many ways it was a real old-style game of football," Academy Director Scott Fitzgerald said.
"There was plenty of endeavour from both sides but at the same time it's fair to say that there a bit of quality missing in each final third."
Sheffield United came close to opening the scoring after seven minutes when Keiran Wallace rattled the crossbar with an effort from the edge of the box.
Millwall's first opportunity fell to Alfie Pavey, whose well-hit volley struck the foot of the post. The striker again went close 20 minutes into the second-half with an angled drive that edged just wide.
The woodwork came to the home side's rescue once again moments later when Dominic Calvert-Lewin was denied before Millwall's Callum Webb, following a neat through ball from team-mate Dylan Casey, drew a smart stop from Blades keeper Jake Eastwood.
Millwall: King, Hoyte, Casey, Thompson, Wood, Parr, Rylah, Farrell, Pavey, Philpot, Webb (Siafa, 70'). Subs not used: Girling, Eze, Ndjoli, Brown