While Adam hailed the Swiss star's signing as a 'great move' and labelled him a 'big player', he admits he was frustrated at being a water-carrier for Shaqiri for the Potters.
He told BBC Sport: "He's a big player, at times he did well for us.
"But in critical situations, I felt tracking back and what we needed for the team in a relegation battle just wasn't there.
"He has got it in him, but he probably knew we were going to get relegated, he was going to the World Cup and had this big move - this move was probably done three, four months ago.
"He is a match-winner, but at times it was difficult to play in the same team. The manager would let him get away with certain things. We fell short, it's not just him, there are others.
"He was the world-class player that we had in our team. Basically, we had to get him the ball to go and make something happen, which was difficult to take.
"We knew he was a match-winner, but we felt we should have had more respect from that point of view.
"When you have players that knew they were going to get a move whether they were relegated or not, it was inevitable what was going to happen.
"He felt Shaq was one who would keep us up - but we had others in teams who could win games."