German Football League (DFL) managing directors Marc Lenz and Steffen Merkel hope that an escalation can be prevented amid the fan protests against the planned entry of an investor into the league. “It’s okay if we are peacefully reminded week after week how important it is to stay within the red lines in the negotiations. But if it concerns possible match cancellations: The clubs and we couldn’t accept that,” Lenz told Saturday’s edition of the Süddeutsche Zeitung. The DFL voted to bring in a strategic partner in a billion-euro ($1.08 billion) deal over a maximum 20 years for a share of the l…