Talgo's top shareholder is in talks to sell its 40% stake in the Spanish train maker to Swiss rival Stadler Rail as an alternative to a tender offer from Hungary's Ganz-Mavag consortium, El Economista newspaper reported on Monday, citing unidentified market sources. On March 7, Ganz-Mavag - which includes the Magyar Vagon rail group - offered 619 million euros ($669 million) for all of Talgo's shares. The bid was opposed by Spanish Transport Minister Oscar Puente, who was quoted by local media as saying the government would do "everything possible" to prevent the takeover.