Former Super Eagles midfielder John Mikel Obi believes Chelsea should have made two key signings in the recently ended January transfer window.

The 37-year-old is of the view that the Blues should have signed two players to bolster the attack and goalkeeping department.

The former Chelsea midfielder believes the club cannot continue to rely on Robert Sanchez in goal and Nicolas Jackson leading the attack.

Sanchez has made five big mistakes leading to goals in the Premier League this season, with his latest blunder coming in the Blues' 3-1 defeat against Manchester City at the Etihad.

Jackson, on the other hand, has failed to score in his last eight Premier League appearances for the club.

Sharing his thoughts on Chelsea's 2-1 victory over West Ham on Monday, the disappointed Chelsea star said:

"But it’s not just Nicolas. Again, it’s good to see that Pedro Neto came in, that’s what we’re crying out for," Obi stated on his Obi One podcast.

"The window is shut, unfortunately, and now we can’t bring anyone in. We didn’t bring in a striker, we didn’t bring in a goalkeeper.

"That’s another window shut without us making the signings we think are going to help us finish in the top four."