We seem to be buying older players now, time was when we wouldn't give a player more than one year's contract when he reached 30. You have to have a mix of young talent and experienced players!
Yes that seems to be the case, we've got enough of them now though, Cech, Koscielny, Ozil, Mkhitaryan, Monreal, Aubameyang, all players in their late 20s/early 30s, we're actually not that young a team, I just think players in their mids 20s make more sense now.