Kevin Pietersen wants to resume his England career in time for the impending Test tour of India, but has a narrow window in which to convince team director Andy Flower that is feasible.

Pietersen yesterday agreed a central contract, initially for four months, with his return to the fold dependent on a "reintegration process" following the breakdown in his relations with Flower, dressing-room colleagues and his England and Wales Cricket Board employers.

At a joint press conference with ECB chairman Giles Clarke, Pietersen apologised to all parties for the "horrible" situation which has prevailed for the past two months.

Following his summer of contract wrangles and intrigue over "provocative" texts he sent to opposition South Africa players during the Headingley Test, the 32-year-old was ex-communicated by England.

Pietersen was dropped from the Lord's Test, picked in neither the squad for England's failed defence of their ICC World Twenty20 title or the imminent trip to India - and not offered a central contract last month when all other senior players were.

He has made his goodwill clear, however, to play his part in his own rehabilitation - a mutual undertaking which will be overseen by Flower, with the help of a professional mediator if he sees fit.

The timetable for a successful process extends until the end of this year. But if it is to be completed so that Pietersen can be added to the squad to leave for India on October 25, swift progress must be made.

Asked if he believes that may be possible, Pietersen said: "I hope so. I want to play for England as soon as I can.

"The process has started really well - and I believe, all being well, I'll be back in an England shirt as soon as possible.

"We're all human beings; we all make mistakes. I've apologised for them."

Clarke took great care to spell out the values and ethics by which the ECB live, and expect their employees to uphold.

"In our society, we believe that if an individual transgresses - and the individual concerned recognises that and apologises for what they may have caused to those involved - then it is important, and a fabric of our society, that that individual should be given a real opportunity to be reintegrated into our society," he said.

''This principle is an essential part of having civilised and sensible ethics. Kevin has apologised.''

The practicalities of Pietersen and Flower finding the necessary time together are compromised by the South Africa-born batsman's schedule.

He must complete his duties as a broadcast pundit at the World Twenty20 - the final is on Sunday, in Colombo - and is then due to fly to his native country to play for the Delhi Daredevils in the Champions League.

Clarke nonetheless added: ''Kevin will be engaged in a reintegration process, which has already started today with a lengthy meeting with me - and the process will continue during October.

''Andy Flower will determine the progress of this process and he will advise the board when he believes the dressing room, England management and Kevin himself are ready for Kevin to be reconsidered for selection.

''That could be very soon, or much later.''