Spain's Repsol SA could have competition if it decides to act on its long-standing interest in Canada's Talisman Energy Inc. "Talisman acknowledges that it has been approached by a number of parties, including Repsol, with regards to various transactions," it said on Monday, Dec. 8. "There is no assurance that any transaction will be agreed." Repsol, of Madrid, has been circling Talisman since at least July as it ponders a deal to boost it activities in North America.