Christoph Franz, the chief executive of German carrier Lufthansa has said he would not rule out future commercial ties with one of the GCC heavyweight airlines, Reuters has reported. After a period of rapid standalone growth, Gulf airlines have started forging links with carriers including Lufthansa's two main European network rivals. Qatar Airways plans to join oneworld, which includes British Airways, and Abu Dhabi's Etihad has forged several codeshare agreements with Skyteam member Air France, while Emirates agreed to cooperate with Australia's Qantas. "It was interesting for us, and has also drawn a lot of attention, that the philosophies of the Gulf carriers seem to have been modified," said Franz. "We are observing and at the end of the day, if there are future circumstances in which Lufthansa could benefit from any kind of relationship, then why not, but there is no rush."