India's pace spearhead Zaheer Khan has been ruled out of the Test series in Sri Lanka due to a shoulder injury and replaced by rookie Abhimanyu Mithun, the cricket board said Wednesday. Zaheer, 31, has been India's most prolific new ball bowler in recent years with 242 wickets from 72 Tests at an average of 32.98. The cricket board did not specify when the left-armer, who played in the recent Asia Cup one-day tournament in Sri Lanka, picked up the injury. Zaheer wrote on his Twitter page: “Shoulder is troubling me a little, need to sort it out. Hope to be back soon. Important season ahead.” Mithun, 20, a right-arm seamer from Karnataka, played a solitary One-Day International against South Africa earlier this year, but has not featured in a Test match. Mithun joins Ishant Sharma and Shanthakumaran Sreesanth in a three-man pace attack for the three-Test series that opens in Galle on July 18. The action then shifts to Colombo, where the second Test will be played at the Sinhalese Sports Club from July 26 and the third at the P. Sara Oval from Aug. 3. India is also due to play a limited-overs tri-series against New Zealand and hosts Sri Lanka after the Tests. Strauss vows no let-up England captain Andrew Strauss is adamant there is no danger of his side taking Bangladesh lightly in the first of three One-Day Internationals at Trent Bridge in Nottingham Thursday. The Tigers have never beaten England in any match, across all formats. England comes into these matches on the back of 3-2 one-day series win over world champion Australia, having beaten Bangladesh convincingly in two Tests earlier in the English season. Strauss, speaking to reporters at Trent Bridge Wednesday, said: “We've won four out of six one-dayers (this season) and we're very keen to win these three. “They're a dangerous side, they all play shots, and Tamim Iqbal in particular is very dangerous. “In Bangladesh (in March) we had to labor to win the one-day series and we're going to have to work hard and make sure we don't give them any inroads into the game. I don't think we're a good enough team just to turn up and win. “We want to take things forward from our Australia win. There's no room for complacency on our part.” Ian Bell also made case for a recall to England's ODI side with a limited overs best 158 for the second string Lions in its dramatic triangular series tied match against India A Tuesday.