I'm probably missing someone, but ... when was the last time Arsenal had a couple of players of Saka and Martinelli's calibre, both already playing at a very high level and only just entering their prime, sign long term contracts?
No offence to the "British core", but these kids are on a new level.
To me, Saka has the stature of Cesc when he was engineering his move to Barcelona. He's conservatively worth £80m or so. Any club in Europe would want him. But unlike Cesc, Saka's Hale End: all Arsenal DNA. Saka's mentality and quality are in the very top echelon. It's a landmark if he commits to Arsenal.