Complex sentence: In February 2015 it was reported by the Berliner Zeitung that the Senate of Berlin wants to rebuild the stadium, and that the reconstruction could begin at earliest in 2018 and be completed by 2023.
Split into simpler sentences: In February 2015 it was reported by the Berliner Zeitung that the Senate of Berlin wants to rebuild the stadium. The reconstruction could begin in 2018 and be completed by 2023.