City spent over £100million again this summer - taking the total spend since Sheikh Mansour's takeover in 2008 to £326.8million. City recently announced financial losses of £121million. While that is apparently not a problem for Mansour, it is not sustainable if the club want to meet UEFA's new financial regulations and play in the Champions League from next season.
"Now the intensity of signing players is levelling off, allowing this group to build and develop - they haven't gelled yet," Marwood told The Guardian.
"We have fast-tracked a lot; we need to put the structure in place. We talk about elite development, the academy, because that is the foundation. That is the future for Manchester City."
Marwood believes the lavish spending has left City with a young, deep squad that will need only minor tinkering for years to come.
"We sat down with Roberto (Mancini) in February-March and planned our summer programme," he said.
"The people here were on the list. There is a balanced strategy. English players and young players. Other than Yaya (Toure) they are all young developing players."
Yaya Toure, who joined from Barcelona, is in the mould of another City player, the ageing Patrick Vieira, who joined in the previous transfer window. Together, they are the only exceptions to a policy of buying young rising stars.
"The feeling was we needed players of presence, quality, with a winning mentality to bring that culture to the club," Marwood said.
"Patrick and Yaya have that. Micah (Richards) for example, is an emerging young player. To have him alongside Patrick, Yaya, Kolo (Toure) every day, in the changing room, on the pitch, is invaluable."
Source: PA
Source: PA