. Yaya Sanogo: 31 app- 2 goals

Former Arsenal boss Arsene Wenger had an eye for great players at a tender age. However, on this one, all Gunners fans will agree he got it all wrong. He signed the young French forward from Ligue 1 side Auxerre. He had scored 10 goals in 13 appearances for them.

6. Sean Dundee: 5 app- 0 goals

In 1998, Liverpool boss decided to bring in Liverpool Sean Dundee to help out up front after Robbie Fowler injury. The South African-born German striker from Karlsruhe would go on to cost £2m. He played for the Reds at Anfield five times but he was only firing blanks. They pushed him out almost immediately.

5. El Hadji Diouf: 79 app- 6 goals

Liverpool legendary manager Gérard Houllier made a great decision in his career like giving Steven Gerrard a chance and later making him Captain but he also made expensive mistakes.

4. Andreas Cornelius: 8 app -0 goals

Premier League club Cardiff City signed striker Andreas Cornelius from FC Copenhagen for a whopping £11million but he ended up being an expensive mistake.

3. Radamel Falcao: 41 app- 5 goals

We are all still in shock when we remember how horrible Radamel Falcao was during his two-year stint in the Premier League. 

2. Andriy Shevchenko: 48 app- 9 EPL

goals In 2006, Chelsea paid AC Milan £30.8 million to sign Ukrainian striker Andriy Shevchenko after a prolific stint at San Siro.

1.Alvaro Morata: 72 Apps- 24 Goals.

Chelsea has allowed striker Alvaro Morata to join Atletico Madrid on loan until the end of the season