It's never easy to live up to the expectations, especially when you're in charge of leading a big club to success, as pressure piles up every time things don't go your way like a domino-effect.
This is even more noticeable whenever a team makes big investments to bring a given player as their hope for the future, but he racks up bad performance after bad performance.
So, even though there's still a lot of time left in the season, we can all agree that some of the players we thought would make a huge impact early on have been a massive disappointment.
5. Marcus Rashford
While Rashford didn't change clubs in the summer, he was one of the main reasons why Manchester United didn't spend to bring a striker to replace Romelu Lukaku and Alexis Sanchez. Yet, he's failed to live up to expectations so far.
Rashford is clearly not a natural number 9 and he just looks uncomfortable in the center of the box. He's scored 5 goals to go along with 3 assists in 15 appearances across all competitions, but that's just not good enough for Manchester United.
4. Christian Pulisic
Christian Pulisic was supposed to be the second coming of Eden Hazard for Chelsea, but so far, it's been Mason Mount and Tammy Abraham the ones to impress at Stamford Bridge, with the American barely seeing the pitch at all.
Pulisic has made the most of his limited chances for Frank Lampard's team, though, scoring 4 goals with 2 assists in 8 Premier League appearances, but he's been far from what we all expected earlier in the season.
3. Philippe Coutinho
Ernesto Valverde's system was supposed to be the reason why Philippe Coutinho was struggling so much at Barcelona, but so far, he's failed to prove his worth at Bayern Munchen, and his playing chances may take a hit with Niko Kovac being sacked by the Bavarians.
Coutinho showed glimpses of the player he once was during Brazil's Copa America run, but he's done little to impress at Germany, handing out 4 assists and scoring a couple of goals for the fast-paced Bayern Munchen offense.
2. Luka Jovic
Luka Jovic took the world for assault last season, scoring 27 goals and handing out 7 assists in 48 caps for Eintracht Frankfurt before completing a sensational move to Real Madrid.
But now, he's mightily struggling at Santiago Bernabeu and hasn't made the most of his opportunities to impress even with Karim Benzema's scoring woes, netting just 1 goal in 12 appearances for Zidane's team in just 291 minutes.
1. Eden Hazard
Eden Hazard finally completed his dream move to Real Madrid and he was called to fill Cristiano Ronaldo's shoes, but he's barely played at all due to injury and has looked out of shape early in the season.
Hazard is supposed to be the team's leader but has only made 9 appearances, scoring 1 goal to go along with 3 assists, pretty unimpressive after they spent over 130 million to lure him to Santiago Bernabeu.