Mauricio Pochettino wants more support in the transfer market before committing to Southampton.
The Mail on Sunday says Pochettino believes he has hit a glass ceiling with his squad, particularly if Adam Lallana and Luke Shaw are sold, as expected.
Pochettino, who has a year left on his contract, said: "If you look at the last 10 years in the Premier League you will see it is always the same seven teams that finish in the top seven.
"We have come as far as we could. We have done everything we could and our position this season is eighth place.
"The fact is we have been fighting against amazing top clubs such as Manchester City.
"In order to try to reach their level we need to have a major international budget resourcing and try to match them on their own terms."
