John Chibuike struggled for most part of the 2012 campaign with a groin complaint after he got injured in <span class="st">Rosenborg's </span>pre-season training camp.<br /><br />Though the 24 - year - old underwent surgery in Germany last summer to repair the damage, he has suffered another relapse. <br /><br />And as a result, the midfielder had to undergo another surgery in Germany on Friday, reports the official website of <span class="st">Rosenborg.<br /><br />''He has had some problems after the operation, but the past week the pain has gotten worse. We therefore chose to send him back to where he originally was operated.<br /><br />''John conducted Friday morning a less invasive procedure in the same place. He should be back in business within a week, but it is still too early to say whether he will play in the first league game,'' says medical coordinator</span><span class="st"><span style=""> Haakon Schwabe</span> to </span><b><span style=""><a target="_blank" href="http://translate.googleusercontent.com/translate_c?depth=1&amp;ei=eDQ6UbCfLoeO7AairoBw&amp;hl=en&amp;prev=/search%3Fq%3Dfotball.aftenposten.no%26hl%3Den%26biw%3D1024%26bih%3D598&amp;rurl=translate.google.com.ng&amp;sl=no&amp;u=http://www.rbk.no/latest-news/article/19abntiklfwt61dscbkswqe06g/title/chibuike-operert&amp;usg=ALkJrhhhYc1qA44ruspVm4BT48DkPyATdQ">rbk.no.</a><br /><br /></span></b><span class="st">Rosenborg, Norway's most successful club, will play Odd Grenland in their first match in the Tippeligaen next Sunday.</span><br />