In the 69th minute, only a handful of seconds after replacing Griffiths, Ciftci combined with former Tannadice team- mate Gary Mackay-Steven before the Hoops winger swept in the only goal of the game against a talented and tough La Liga outfit.
“I’m very happy to get him in. He showed what he can add to the team. He’s a good football player and he’s going to be an important player for us.”
The Hoops gaffer declared himself pleased with the work-out against Moyes’ side. He said: “It’s going to make us even stronger. We have things we can do from the bench and we have a strong squad and everyone is looking forward to the games.
“Offensively, we started without confidence, but we grew throughout the game and in the end we created the chances we needed to win. So, I’m happy with the performance.
“We need more sharpness, but that’ll come on Wednesday.”
Former Manchester United boss Moyes, an ex-Celtic defender, had sympathy for the Hoops’ early European start. He said: “I don’t think it’s a great situation that they are being asked to start so early in the season, but that’s down to where Scotland are in the coefficient.
“The games have to start early and it’s not easy for Celtic, but those are the rules.
“If Scotland can continue to improve, then it may change and the national side is doing the country proud and there are a lot of Celtic players part of that team.
“You want your team to be at their best coming into the last few months of the season when you’re approaching Cup Finals and league title races.
“But Celtic need to be at their best at the start and they better be ready.”