I am always grateful to my team-mates at Milan for what we achieved.
My time at Real Madrid wasn't a failure. I played 120 matches, I scored 28 goals, and I played an average of 30 games a season. What's more, I won three trophies: La Liga, a Copa del Rey, and a Supercopa de Espana.
Messi is undoubtedly a gifted footballer, like Maradona and Pele, and he's playing for the best club side in the world at the moment. He's successful and he's winning trophies, so it's only logical that he'll be voted the best player in the world.
My first medal, the League Cup at Tottenham, that was a very proud moment for me. Being captain, and winning. But also winning the double in my first year at Arsenal, that was special.
Every club has legends, and at Barcelona, Cruyff and Pep are going to be spoken about forever, knowing what they've achieved and in what style.
My first trophy in France was the Young Player of the Year. I was 17. Chelsea is not just one player. It is not only me. We have signed a lot of players. Now we have some good signings like Cesc Fabregas and Diego Costa.
I celebrated great successes alongside exceptional players like Philipp Lahm, Thomas Mueller, Manuel Neuer, Bastian Schweinsteiger, Miroslav Klose, Luca Toni, and Franck Ribery.
At the end of the day, I'm a footballer who has played at some of the biggest football clubs in the world and played with some of the best players in the world.
Liverpool manager Bob Paisley signed me from Crewe in 1981. We were the champions in my first season and I went on to win many honours.
I've been with clubs who won the league championships in Holland and England, which was brilliant, and to win the Champions League with Manchester United was an amazing experience.
We never knew we'd have kids playing pro football or going to Super Bowls. That wasn't ever a part of our plan in raising kids, so we really feel blessed.
I've done quite a bit in England. I've won the majority of trophies and awards that there is to win, apart from top goalscorer... which is hard as a defender.
I have big hopes and big dreams and aspirations to do great things in the NFL.
Messi will continue to break records.
I hope I can help Chelsea win many trophies during my time at Stamford Bridge.
When I was playing for Real Madrid, we competed in the UEFA Champions League most of the time and won it three times. When we didn't win we always ended up in the later rounds.
Messi won 3 Ballons d'Or and is competing for another one. He will be the best player in the world until he retires.
I am very proud of my goal record for England.
I think that the Brazilian football is one of the best in the world. It still is and still struggles for this. We have talented players that can take Brazil to the top.
I think he [Sir Alex Ferguson] may have even surpassed the achievements of Matt Busby for Manchester United.
Laddie, that man scored 200 goals in 270 matches - an incredible record - and he has won cup after cup as a manager. When he talks, pin back your ears.
I began by playing for the biggest club in the Lorraine region, went on to the biggest club in France and ended up with the biggest in the world.
I think the greatest Real Madrid player of all time is Cristiano Ronaldo followed by Ferenc Puskas. Ronaldo equalled Puskas’ great record of 242 goals in fewer games. He was also the fastest Real Madrid player to score 100 goals and holds the record for most goals scored for Madrid in a season.
I scored about 40 goals with Roma, so that's quite good.
Back home in Germany, football people think very highly of Arsene Wenger. They listen to what he has to say and admire his achievements.