Thiago Silva and Noni Madueke scored either side of the break to put Chelsea 2-1 up, with Jayden Bogle scoring for the Blades just after the half-hour mark.

Just when it looked as though Chelsea were on course to claim all three points, McBurnie struck in the third minute of stoppage time.

Pochettino said: “It is very frustrating because when you concede in the last few minutes you feel very disappointed and frustrated because you should win the game."

“We had the possession but didn’t create enough. I think in the first part of the season we were a little bit more solid. We were creating but we weren’t clinical. Now we are scoring more but we are conceding more."

“The difficult thing is to find the balance. The team is not showing in the last few months the capacity to be solid."

“We score goals but we are conceding. We need to be positive. We are trying to find solutions about being more solid and not conceding too much."

“The process to build a team always takes time – it is not a magic thing."

“I think it is the normal process that this happens. We need to work and try to fix this type of problem."

“We need to analyse the squad at the end of the season and see what we are missing and try to add people with the capacity to improve next season.”

Sheffield United boss Chris Wilder felt his side deserved a point.

He said: “I think everybody in the ground would have been disappointed if we’d not got a result from that effort."

“I didn’t like the first 15 minutes. I thought we looked leggy and we looked like it was that third performance in a week."

“But we got ourselves going and the midfield got us passing it and moving it forward. The midfield three was really good."

“I’m delighted with the last 75-80 minutes. I thought it was really good."

“The only time I can be super-critical is their second goal."

“The press was good in the second half. The mentality of the team was to go and win the game from 1-1."

“We’re slightly disappointed that we’ve not got a couple of more points on the board."

“When you look at the league table and the position we’re in, it never looked like that today. It doesn’t have that feel, really. We’re in decent nick."

“I think everybody would have been really disappointed if we’d not got anything out of the game."

“I can’t be too critical when they’re giving everything. We had a better bench today and we understand the demands of the Premier League and a three-game week."

“You’ve got to really dig in and find that little bit extra. There’s enough character in the team.”