England coach Andy Flower believes Kevin Pietersen must reveal the content of his controversial text messages if he wants to salvage his international career. South Africa-born Pietersen was left out of the England side that lost their world number one Test ranking to the Proteas with a 51-run loss at Lord’s on Monday after sending what he admitted were “provocative” texts to South African players. Although he has apologised, Pietersen’s failure to furnish the England and Wales Cricket Board with the detail they want did not help his cause, as he was dropped despite a brilliant 149 in the second Test at Headingley. He was also omitted from the squad named Tuesday for next month’s World Twenty20 in Sri Lanka, despite being the player of the tournament when England won the tournament in the Caribbean two years ago. Flower said “I’m not sure of exactly the best way to investigate it. I think it’s always nice to have a large element of up-front honesty.” But Flower was cautious as to whether Pietersen had played his last match for his adopted country, after earlier attempting to seemingly dictate when he played for England and in what format before making himself available again for all matches.