Head coach Andre Villas Boas applauds as he celebrates their victory over Spartak Moscow in their Europa League quarter-final second leg soccer match at Luzhniki stadium in Moscow April 14, 2011. [Photo/Agencies]

MILAN - Porto's Andre Villas Boas will not become the new coach of Inter Milan partly because of an expensive release clause in his contract, Inter sporting director Marco Branca said on Sunday.

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Media reports said Branca had flown to talk with the coach of the Portuguese and Europa League champions after Leonardo signalled he was quitting Inter for a less stressful sporting director role at Paris St Germain.

"The presence in his contract of a very expensive break clause among other things excludes the possibility of him sitting on the Inter bench," Branca told Ansa in quotes carried by Inter's website.

Former Argentina boss Marcelo Bielsa has ruled himself out of the running after initial talks while England's Fabio Capello and Fiorentina's Sinisa Mihajlovic have distanced themselves from the role as the 2010 European champions seek a fourth coach in just over a year.