The 28-year-old midfielder has played the entire 90 minutes in each of the Seasiders’ most recent two fixtures, his only starts since September, and the Tangerines have picked up a couple of draws, with only a last-gasp Eidur Gudjohnsen goal denying them victory at Bolton on Saturday.
Last summer Cubero was starring for Costa Rica in their unlikely run to the World Cup quarter-finals, but his first few months in English football were frustrating due to work-permit complications and then a foot injury.
However, now finally finding his feet at Bloomfield Road under Clark, the club announced they had exercised a one-year option on his contract to ensure he will remain with them next season.
That will almost certainly see him playing in Sky Bet League One due to the Seasiders’ struggles this term, which Clark admits may not have been quite so severe if Cubero had been around for its entirety.
“Jose’s come in and been outstanding,” said the ex-Birmingham boss.
“Thankfully we’ll be keeping him again for next season as we activated his option clause.
“It’s frustrating for me that he’s shown in the two starts he’s had that he would have been a fantastic player for us.
“I’m not saying he would have made the difference between us staying up and not but we certainly would have had a lot more points on the board with him around because he’s added his experience and his quality to the group.
“We’re going to have a lot of young players in the squad next season. They’ll be hungry ones but we do need a good sprinkling of experienced ones who are going to be able to contribute to hopefully a successful season.”