Jamie Carragher was in fine form on social media yesterday as he trolled Sol Campbell for saying he's "one of the greatest minds in football".Campbell reacted angrily to being overlooked for the vacant Oxford United job and and boldly claimed clubs are actually scared to hire him.Here's what the former Arsenal centre-back said: "I did go [for the Oxford job] and they didn't accept me. Maybe it was a lack of experience, things like that, but it's a full circle."Experience? How do I get experience? Well, I need a job to get experience. I'm intelligent enough, it's not like I played on a fox and dog pitch all my life."I can't believe some people, I'm one of the greatest minds in football and I'm being wasted because of a lack of experience or 'maybe he talks his mind too much'."They say sarcasm is the lowest form of wit but that didn't stop Carragher from mocking his old international teammate by tweeting: "No wonder he kept me out of the England team!"

CARRAGHER REACTS TO CAMPBELL

The Liverpool legend's tweet went down pretty well with football fans and this morning he aimed his sights at another Arsenal great: Martin Keown.

In a newspaper column, Keown recalled how his performance against Manchester United in his third ever game for Arsenal was described as the 'best from a centre-back all season' at the time.

He wrote: "In my third game at Arsenal, I faced Manchester United at Old Trafford. I was up against Mark Hughes and we kept a clean sheer, winning 1-0.

"Viv Anderson, who did not play but was watching in the stands, said that it was the best performance he had seen from a centre-back all season.

"When a European Cup winner said you had been magnificent, you believed it. It shows real leadership - and he wasn't even wearing the armband."

Another arrogant comment from an ex-Arsenal player, which prompted another funny response from Carragher (see below).

CARRAGHER REACTS TO KEOWN AND CAMPBELL

Carragher simply replied: "Yesterday Sol Campbell today Martin Keown!" Arsenal's legends clearly have high opinions of themselves.

Campbell reckons managing a club isn't rocket science and that he's intelligent enough to achieve whatever he puts his mind to.

"I'm confident and it's not like it's rocket science to run a football club, especially when you get to that level," added the Englishman.

"If you're intelligent enough and a quick learner you will learn pretty soon, within two or three games, what the team needs, training-wise, to survive in that league, get better in that league, to get in the play-offs or even win the league."