By Iain Rogers MADRID, Dec 20 (Reuters) - A European Commission probe into possible illegal state aid to seven Spanish soccer clubs including Real Madrid and Barcelona is not part of a malicious campaign against Spain, one of the complainants said on Friday. Loek Jorritsma, a retired senior policy adviser at the Netherlands ministry of sports, made a formal complaint in 2010 highlighting what he believed was illegal aid to clubs in his native Holland as well as to Real. The Commission opened an investigation into five Dutch clubs, including PSV Eindhoven, in March and launched a separate probe into Real, Barca, Athletic Bilbao, Osasuna, Valencia, Elche and Hercules on Wednesday. More...