Former Premier League midfielder Paul Merson believes Ole Gunnar Solskjaer is at fault for not bringing the best out of Cristiano Ronaldo at Manchester United.Ronaldo made a good start to his second stint at Manchester United, but has faltered of late. The Portuguese has failed to score in three of his last four games for the Red Devils across all competitions.His poor form has put the spotlight on Solskjaer, who has failed to find the right setup so far this season. Manchester United’s attackers have failed to hit their stride, which has affected Ronaldo’s output.Sky Sports@SkySportsWith Cristiano Ronaldo's high-profile return to Old Trafford continuing to shine a spotlight on Manchester United's disjointed team of individuals, Paul Merson questions whether Ole Gunnar Solskjaer really wanted to re-sign the forward ⬇️11:30 AM · Oct 19, 202138415With Cristiano Ronaldo's high-profile return to Old Trafford continuing to shine a spotlight on Manchester United's disjointed team of individuals, Paul Merson questions whether Ole Gunnar Solskjaer really wanted to re-sign the forward ⬇️Merson feels Solskjaer is to blame for the team’s overall lack of creativity and Ronaldo’s poor run. He added that the manager needs to tweak his system to get the best out of the Portuguese star.“Cristiano Ronaldo doesn't do anything up front, he just stands still because he cannot go past people anymore. United's forward players are petrified, they just give Ronaldo the ball in hope more than expectation," Merson said.“To get the best out of Ronaldo he's got to be given a completely free role, in the hole and then have the likes of Marcus Rashford or Mason Greenwood opening up the game ahead of him to give him the space he needs on the ball. But if you play him up front you have to accept that he is not going to run beyond.“I wouldn't blame Ronaldo, it's the manager's responsibility to adopt a system that gets him into the game. Ronaldo is the best in the business over five yards, he makes great runs, he's just not getting the service. Jadon Sancho doesn't cross the ball, Greenwood wants to come inside and shoot, Bruno Fernandes and Paul Pogba want to spray it around in the middle, and Ronaldo just isn't getting the ball in the areas where he can hurt teams," Merson added.Time running out for Ole Gunnar Solskjaer at Manchester UnitedCristiano Ronaldo’s poor reintegration has heaped more pressure on Ole Gunnar Solskjaer. Manchester United have picked up just one point from their last three Premier League games, and sit sixth in the table, five points behind leaders Chelsea.Cristiano Ronaldo@CristianoTo all the fans who voted for me for Player Of The Month… Thanks, guys! 👏🏽🤜🏽🤛🏽12:08 PM · Oct 15, 202128514321184To all the fans who voted for me for Player Of The Month… Thanks, guys! 👏🏽🤜🏽🤛🏽 https://t.co/Nf9wnJzvXqThe Champions League clash against Atalanta on Wednesday night will be key as the Red Devils look to build some momentum ahead of their big league game against Liverpool on Sunday.Solskjaer might have to think of the bigger picture and drop Cristiano Ronaldo in some of the big games considering his presence hinders their usual style of play.It remains to be seen if Ronaldo will start the upcoming games against Atalanta and Liverpool.