The Mets are targeting late next week for Johan Santana to make his spring training debut. The lefty had his spring schedule pushed back because of weakness in his surgically repaired shoulder. “All signs point to his shoulder getting the strength he needs. He’s happy with the way he feels, he’s happy with how he is throwing right now,” Terry Collins said. “This is the schedule we’ve had all along.” Santana, who declined to talk to the media on Wednesday, did a long-toss session then some light work off a half mound before the Mets’ game against his native Venezuelan World Baseball Classic team. He sped up his workout schedule Sunday when he did an unexpected bullpen session in reaction to reports that the Mets were not happy with his fitness. With Santana Back on the original plan, Collins said Santanathe ace will pitch another bullpen session and then a batting practice before pitching in a game. While Collins would not commit to an exact date, the schedule puts Santana on track to pitch Thursday against the Tigers. That would give him a chance to make three spring training starts before camp breaks but still make Opening Day questionable. “I am not getting caught up in Opening Day right now,” Collins said. “A lot will be determined by how he comes out of the next few days, how he comes out of his start when he comes out of it.”