England defender Ashley Cole has admitted a Football Association charge in relation to a Twitter comment which was improper and/or brought the game into disrepute, the FA have confirmed.
Wayne Rooney said it was "a big challenge" to be named as England captain for their World Cup qualifier against San Marino tomorrow.
The Manchester United forward will lead out his country at Wembley in the absence of usual captain Steven Gerrard, who is suspended, and vice-captain Frank Lampard, who is injured.
Chelsea defender Ryan Bertrand reacted angrily to accusations he pulled out of England's squad for the World Cup qualifier against San Marino on Friday because he had a sore throat.
The left-back tweeted: "Just to clarify. It's not a 'sore throat' I'm ill. Swollen glands in my neck. And constant headache for 3 days now and freezing cold. Do you think a "sorethroat" could stop me being a part of a match for my club or country?#yourf******nuts this is what every boy dreams of."
England manager Roy Hodgson said Bertrand's tweet along with Ashley Cole's earlier outburst on the social networking site was a reminder of how careful players have to be.
He said: "It's a reminder. His sentiments were laudable. He was a little irritated but his choice of words was wrong but it reminds us how unbelievably careful the players have to be."
Fantastic news @waynerooney Captain for game tomorrow!!! So proud of you!!!
– Wayne Rooney
Am I unfulfilled at international level? That is fair. I haven't been at my best for England and that is something I'm desperate to put right.
I think us as a team and as a country, we need to be more successful and better in tournament football.
Manchester United striker Wayne Rooney said: "It is a great honour. I'm really proud and excited. It will be a big night for me and my family.
"It is a big challenge for myself. I don't know what sort of captain I am and I already speak with all the players whether it is younger or older. But I will try and get the best out of myself and the other players - and hopefully they can get the best out of me.
"Hopefully it will be a great result for us and I'm looking forward to the game."
England manager Roy Hodgson confirmed Wayne Rooney would captain his country in their World Cup qualifier against San Marino.
Usual captain Steven Gerrard is suspended for the match, while vice-captain Frank Lampard - who had been in line to lead the team out - suffered a small injury in training.
– Roy Hodgson, England manager
I enjoy working with Wayne, we had a good Euros.
I was disappointed of course when he got that terrible gash and I was even worried it would keep him out not only of the September games but also of the October games.
Luckily he has made a quick recovery and will certainly captain the team in the first one.
Wayne Rooney will captain England in their World Cup qualifier against San Marino at Wembley.
It will be the first time the Manchester United striker has lead his country in a competitive international match.
Rooney, who has 76 caps for England, missed the first two Group H matches after suffering a nasty cut in a Premier League match.
England face the European minnows tomorrow, four days before a tougher match against Poland in Warsaw.