Liverpool - Liverpool manager Jurgen Klopp is the latest Premier League manager to highlight the difficulties of securing quality footballers at a reasonable price during the January transfer window.
Klopp is said to be on the lookout for defensive reinforcements and a quality forward due to Sadio Mane's African Cup of Nations commitments with Senegal.
After going down 3-2 to Swansea at Anfield on Saturday, calls for news signings have grown louder but the German revealed club's are reluctant to sell their players during the mid-season transfer window.
"I understand it is absolutely normal that people ask whether we should have brought players in," he said after the game.
"The situation is yes, on the one side pretty simple, but on the other hand it is pretty difficult. It is not that we don't want to bring players in.
"We do. But the thing is, the players we want, because we think they help us, the clubs don't sell. It is not about money in this situation, it is the winter transfer window.
"Clubs are saying 'No, we have half a year to go, we cannot find another player like this, we prefer to take money in the summer than a few pounds more in the winter than whatever'.
"So it is pretty easy. You see the situation. It's tight, it's close, we know that, but if the right decision is not possible in signing the right player then you cannot make the wrong transfer."
Liverpool next welcome Southampton to Anfield in a return semi-final fixture in the League Cup on Wednesday as Klopp's men will be looking to reverse a 1-0 deficit.
Kick off is at 22:00.