Manchester United have been well off the pace in the Premier League since Sir Alex Ferguson's retired in 2013.
Even with Jose Mourinho in charge this season, the Red Devils are struggling to secure a top four spot.
And Jenas doesn't expect anything to change next season, even if Mourinho goes out and spends big this summer.
Jermaine Jenas doesn't expect Jose Mourinho to guide Man Utd to the Premier League title next season
"I think it's a way away," BBC Radio Five Live.
"I'm not sure if that's because Chelsea have set the bar so high this year, or Manchester United are just not the Manchester United I know.
"I don't think [signing top-class attacking talent would be the solution].
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"They had Di Maria and it still didn't work out.
"The feeling around Manchester United is the cure is 'let's spend £70m every year'.
"'Let's just spend another £70m, £50m, £100m and it's going to cure itself'.
"The best buy they've had all year they got for free and the reason behind that (Ibrahimovic) is because of his mentality."