Arsenal have reached their first Champions League final for 20 years and they now know who they will play in the showpiece after Paris Saint-Germain downed Bayern Munich in an enthralling semi-final tie. Arsenal’s lone previous appearance in the biggest match in European football came against a pre-Guardiola Barcelona back in 2006 when goalkeeper Jens Lehmann was sent off after just 18 minutes but they still led 1-0 thanks to Sol Campbell heading home Thierry Henry’s 37th-minute free-kick. However, goals from Samuel Eto’o and Juliano Belletti in the final 15 minutes broke Gunner hearts and handed Barca a 2-1 triumph. Mikel Arteta has now emulated Arsene Wenger in leading Arsenal to a Champions League final as Bukayo Saka’s goal on the stroke of half-time at a rocking Emirates Stadium in the semi-final second leg saw them battle past Atletico Madrid 2-1 on aggregate and book a spot in the showpiece in Budapest.…