Merson says Mourinho still cannot find his best team at Manchester United.
Arsenal's last league win over Chelsea was in October 2011.
Manchester United and Leicester City face each other in the Premier League clash on Saturday.
Luke Shaw was diagnosed with a slight groin tear following United's loss against Watford.
Only a result on day four at Lord's can deny Somerset a first championship title.
Brazilian is currently on loan at Sporting Gijon.
Wales are concerned midfielder could miss World Cup qualifying double-header in October.
Los Blancos travel to Canary Island on Saturday before a Champions League clash with Borussia Dortmund.
Danny Murphy says Mourinho was disappointed to be overlooked for Rafael Benitez.
Boro host Spurs following two consecutive defeats to Everton and Crystal Palace.
Wenger arrived in England on 22 September 1996 to take charge of Arsenal.
The Foxes stopper suffers muscle injury after recovering from concussion but Papy Mendy out.
Spaniard has been left out of the Catalans' squad for the last three games.
Arsenal welcome Chelsea to the Emirates Stadium on Saturday (24 September).
Rome's withdrawal as a candidate for the 2024 Games highlights risks attached to being host city.
Karius impressed for the Reds in their EFL Cup win against Derby County.
Former midfielder praises Arsene Wenger's longevity at the north London club.
Chamberlain scored a goal in Arsenal's EFL Cup win over Nottingham Forest.
Fabregas is hoping to start against Arsenal on Saturday, 24 September.
Dimitri Seluk believes money and talent led to Pep Guardiola's success over the years.
Teenager is also reported to have attracted interest from Barcelona and Manchester United.
The German made the comments in response to a study led by the CIES Football Observatory.
Aliko Dangote wants gas and oil investments to play out before pursuing the Premier League club.
Carrick has not featured for Manchester United in the Premier League this season.
The striker was substituted during Liverpool's 2-1 win against Chelsea at Stamford Bridge.
Christian Eriksen, Harry Winks, Tom Carroll, Eric Dier and Dele Alli have also signed new deals this month.
The Portuguese thinks people have been too quick to dismiss his managerial achievements.
Wenger was introduced as the Arsenal manager in September 1996.
Spaniard would snub Manchester City as he wants to renew his current deal which is set to expire in 2018.
Can has played just 20 minutes of Premier League football this season.