Catalan club are willing to pay up to £48m
He says there were no previous indication that Herrera wanted to leave the club.
QPR have reportedly seen a bid of £5m for the full back rejected.
Costa already scored 27 La Liga goals last campaign.
The Belgium did not concede any goal to the Argentine last season.
Murray says now is time to regroup and get back to his very best.
Arsenal are set to offer around £24m to Real Madrid to secure his services
France will take on Germany in the first quarter-finals of the 2014 World Cup. Find out where to watch the game live in the UK.
Brazil face Colombia in the quarterfinals of the 2014 Fifa World Cup. Find out how to follow the game live in the UK.
Former Barcelona assistant coach believes move to Barca will help Uruguayan's rehabilitation
The Barcelona midfielder was handed his debut by the Manchester United boss 12 years ago.
Algeria striker Islam Slimani reveals team to give second round winnings to occupied territory
The Scottish striker has been linked with a move to the Premier League in recent weeks.
Colombia's Rodriguez dreams of playing at the Santiago Bernabeu.
Carrick says United squad will make Herrera feel as welcome as possible
Liverpool's Adam Lallana thanked Southampton fans by taking a full page advert in local paper.
Kroos agrees five-year contract at Santiago Bernabeu for €5m a year
Thibaut Courtois is expected to replace the 32-year-old next season.
Tottenham's pursuit of Ben Davies appears to have hit an impasse as Swansea reportedly demand £12m for the left-back.
Liverpool are considering a move in signing Schalke striker Klaas-Jan Huntelaar.
Manchester United make massive bid to land Serie A winger Juan Cuadrado
Arsenal 'agree' deal to sign Newcastle United defender Mathieu Debuchy.
Arsenal make massive £30m bid to land Alexis Sanchez from Barcelona
Liverpool are set to lose Luis Suarez as the star striker is closing in on joining Barcelona this summer.
Di Maria, Benzema and Khedira face an uncertain future in La Liga.
After Liverpool join chase to land Mario Balotelli, IBTimes UK lists Italian's 11 craziest moments
Brendan Rodgers is expected to focus on defensive additions in the coming weeks.
Brazilian's first appearances likely to be limited next season with Luiz's arrival
A recent poll made by Sport reveals their readers don't want the Liverpool star.
Liverpool FC has chosen Construction firm Carillion as the company for expanding Anfield.