Sunderland are attempting to sign Lens and Lombaerts this summer.
Sunderland are keen to wrap up deals for Jeremain Lens and Nicolas Lombaerts in the coming days, but Dick Advocaat has told the Sunderland Echo that financial reasons are behind the delays in the deals.
“It’s great very quiet at the moment with buying new players,” the Dutch boss said. “But for the teams abroad, when you try to get a player, they think the money is there so they ask for so many pounds. It’s very difficult.
“I know what I want, but it is not so easy to get them in.”
The Premier League’s financial strength is the reason for Sunderland’s failure to get deals over the line, according to Advocaat.
Adam Matthews and Sebastian Coates have already been signed on permanent deals for budget values, but as they came from Britain the financial demands were not as high.
However, Lombaerts and Lens - who play for Zenit and Dynamo Kyiv respectively - have seen their moves to Wearside held up as their clubs are asking for high transfer fees.
It is clear that the Premier League is a division rolling in money, but for a club such as Sunderland, securing budget signings is still imperative. With foreign clubs believing that all Premier League outfits can splash the cash, they raise their asking prices for players being targeted.
Advocaat is a big fan of the players he wants to bring in, and is keen to get the deals over the line as soon as possible. However, that is not likely until the European clubs lower their asking prices so as to ensure Sunderland are not paying a premium for their transfer targets.