Bayern president Uli Hoeness has claimed that it will be difficult for the club to invest €100m for Arsenal’s Alexis Sanchez this summer.The 29-year-old is set to leave to Gunners after they failed to qualify for the UEFA Champions League and with less than 18months left on his current deal – the Chilean has refused to sign a new contract at the Emirates.Read Also | Perez: No plans for Real Madrid to sign Mbappe"You cannot reconstruct a team by signing 29 or 30-year-old players for €100 million. That is no policy," Hoeness said. Former Germany captain Oliver Kahn added his voice to the ongoing transfer triangle which includes Manchester City, Bayern Munich and Arsenal. “Of course [Sanchez is a target], but today in professional football, it's not very easy to get a big transfer - the so called 'grenade',” Kahn told Omnisport. “That's the same for Bayern. "It's not easy to get a new [Franck] Ribery or a new [Arjen] Robben, because other clubs don't necessarily have to sell their players because they have an enormous amount of money. "They can make players stay at the club and that's what makes it more difficult for Bayern to buy top stars."