Manchester United playmaker Bruno Fernandes has insisted that the Red Devils still have some issues to iron out as they lead the way in the Premier League.
Ole Gunnar Solskjaer's men have taken advantage of Liverpool's winless run and now find themselves two points clear at the top of the table, although second-placed Manchester City do have a game in hand.
United also advanced to the fifth round of the FA Cup with a 3-2 win over Liverpool on Sunday, but Fernandes knows that his team are not perfect and must address some ongoing problems in the second half of the season.
In quotes attributed to The Mirror, Fernandes said: "After the Leicester game when we drew in the last minute, I was really happy to see the frustration on the team when I got to the dressing room.
"It was the first time I saw a real frustration after drawing a game. I think we have to build on this and more and more be prepared, when we lose one game, to keep going on the same level.
"When I arrived I could see that the team was growing up. Game by game, we started to do better and better. Now, almost one year after I arrived, I think we still have problems.
"You can see we concede a lot of goals in the beginning of games. We have to be a little bit more of a team and not expect all the time that someone makes something exceptional."
The 26-year-old's sublime free kick propelled Man United to victory over Liverpool at Old Trafford on Sunday in what was his 16th goal of the season in all competitions.