Manchester United have struggled for goals all season, scoring just 39 Premier League goals so far.
While all the other clubs in the top six have scored at least 53 times.
Paul Pogba spotted with bandaged wrist after Bournemouth clash
Sat, March 4, 2017
Paul Pogba was spotted with a bandaged wrist after Manchester United's 1-1 draw with Bournemouth at Old Trafford
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Paul Pogba was spotted with a bandaged wrist as he left Old Trafford on Saturday
There has also been an over-reliance on Zlatan Ibrahimovic, who with 15 league goals has scored nearly half of United's overall tally.
Paul Pogba has just four league goals with fellow central midfielders Marouane Fellaini, Michael Carrick and Ander Herrera yet to score.
Paul Pogba has scored just four goals in the league
And Carragher feels Mourinho needs more from his midfield and may go looking in the transfer market in the summer to solve the problem.
"When Mourinho looks back at the end of the season and he's going through it with his staff, with Ed Woodward, he will say we need more goals," said Carragher on Sky Sports.
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Jose Mourinho intends to spend big in the summer
"In that 4-3-3 the idea is that you don't need a second striker because you get goals from midfield. If Pogba is not providing goals, Mourinho is going to want another attacker there.
"I think it's a massive problem for Mourinho. You've spent that much money on a player, that position is best for him, but he's lacking goals and there's talk of Antoine Griezmann coming in.
"They're going to want to spend big money on someone to get those goals. So if they get a Griezmann, or someone of that ilk, he then has to play [behind the striker] and you've still got the same problem. If you break a transfer record on Griezmann, he's going to have to play week in week out, so again, Pogba finds himself in that position in a midfield two."