Seven things we learnt: 2015 has been year to forget for Manchester City; Marouane Fellaini is 'unplayable'; Francis Coquelin is missing piece

It has been another absorbing weekend in the Premier League

Marouane Fellaini celebrates after scoring United's second goal with a powerful header in their 4-2 win over City in the Manchester derby at Old Trafford (Getty)

Manchester City have had a year to forget

After their 4-2 humbling in the Manchester derby, Manchester City have now lost five matches in all competitions in 2015 - that's already one more than they whole of last year, and it's only April.

Second-half blues hinder City again

That old stat about City and trailing at half-time has reared its head again. First they went in 1-0 down at the break against Crystal Palace last Monday, and yesterday 2-1 at Old Trafford.

In total it has been 20 years, yes, 20 years since they won a Premier League match after losing at half-time, spanning 87 games in the division. It has become a curse for City.

Manuel Pellegrini is under more pressure at City (Getty Images)

Fellaini is back to his 'unplayable' best

He may have taken over a season to settle in, but Marouane Fellaini is now back to the dangerman he was when he excelled for Everton. The £27.5m Manchester United midfielder/targetman terrorised Manchester City on Sunday, and team-mate Juan Mata was quick to heap praise on the Belgium international after the match.

"On his day, he's unplayable. I don’t think Yaya Toure wanted to be tracking back, he wanted to be at the other end of the pitch but he had that job to do on Felli," Mata said.

Marouane Fellaini has impressed for United (EPA)

"When Felli is in the box and you can find him, you've definitely got a chance of scoring. I saw him at the back post and hoped he’d get on the end of it and score and, thankfully, he managed to do that."

Arsenal are the best they have been in 10 years...but they are six games too late for title push

It's official, Arsenal are the best they have been in 10 years. They became the first team to win eight successive Premier League games on Saturday after their 1-0 triumph at Burnley. The last time they had won eight games in a row in England's top flight - in 2003/04 during the unbeaten 'Invincibles' season.

Aaron Ramsey scores Arsenal's only goal in the win at Burnley (Getty Images)

Coquelin is missing piece in Arsenal midfield

A hard-working, solid and disciplined defensive midfielder has been much sought by Arsene Wenger for years. Turns out he had the player he needed under his nose all along. Francis Coquelin may have taken a longer route to the Gunners first-team, with loan spells at Lorient, SC Freiburg and Charlton but his combative displays have earned him the right to be one of the firs names on the team-sheet.

Francis Coquelin has performed magnificently in the Arsenal midfield (GETTY IMAGES)

Sherwood has got Benteke firing

Tim Sherwood's passion for the game is infectious. Having scored just three goals in 19 matches this season before Sherwood was appointed Aston Villa manager on Valentine's Day, Christian Benteke has now scored eight goals in the Premier League, that's more than any other player in that time. His goals will keep Villa up.

Tim Sherwood celebrates Villa's win at White Hart Lane on Saturday (Getty Images)

Pardew for manager of the (half) year?

Since taking charge at Crystal Palace in January, Palace have now taken 25 points, only Arsenal with taken more with 30...