I know football isn't played on paper but if you look specifically at signings over the last few years we are starting to fall behind. Next season I expect our 3 main title rivals to be the chavs, gooners and rags and if you compare their recruitment to ours it does not make for good reading.
Arsenal - Cech, Ozil, Cazorla, Sanchez
Chelsea - Courtois, Matic, Fabregas, Hazard, Costa
Scum - Valdes, Herrera, Blind, Schweinsteiger, Depay, Van Persie
and then compare it to our transfer dealings
City - Caballero, Fernando, Navas, Rodwell, Sincalir, Delph
I don't think we have signed a world class player since Aguero and it looks like once again next season we are going to rely on the Kompany/Touré/Silva/Aguero spine to carry us through. It's one thing to have a world class core but you have to supplement it with other top class players that improve your starting 11 and the only signing that falls into that category is Fernandinho. 1 signing in the last 3 years.
Delph is a decent signing IF he's just the start but if the 'Big 3' (Pogba, De Bruyne, Sterling) fall through which is possible then we have to be careful because other teams are catching us up and soon we won't have that famous world class core to rely on anymore.