OK, is the loss of 'a yard of pace' a matter of fact or your opinion? If it is indeed fact, please feel free to enlighten me with another Bleacher Report statistic to prove this.
Can you also provide a metric to prove his 'inability to beat a man one on one'? This is the most worrying stat for me because in our last match, I too can draw instances where Sane, Sterling, Aguero, Silva & KDB also failed on occasion to beat our opponents one on one.
In terms of ageing, you're a day older than you were 24 hours ago. However I can see your point that Sanchez shouldn't be bought because he too has aged a day in the last 24 hours, unlike normal professional footballers who don't age at all.
My understanding is that all footballers physically remain age 18, until they reach age 34 in solar years, by which time their bodies go through an instant chrysalis process, & their bodies miraculously catch up to their solar years.
The weird world of Quantum mechanics has a lot to answer for mate.