Former Manchester United assistant manager Rene Meulensteen can understand David Moyes' cautious first summer market.
Moyes only added Marouane Fellaini to United's squad during the transfer window.
Meulensteen told BBC Sport: "David is an experienced Premier League manager and he has been in the transfer market many times. I think he's very pleased he got Marouane Fellaini, which is definitely an improvement to the squad. Every time we played Everton, he caused us loads of problems and it puts more physical presence into that midfield. It's clear David rates him extremely highly and in my opinion he's done a very good job to get him.
"I don't think they have to jump into the market in January - they haven't done in the past. It's hard to get players in January and not much has changed to their squad anyway - not many have left, Wayne Rooney has stayed and he is a key man, Nani has been given a new five-year contract so that stability and continuity in the squad is still there."