Chelsea "need another striker" this summer with Alvaro Morata and Olivier Giroud having failed to fill the boots of Diego Costa, according to Frank Sinclair.
The Blues secured two Premier League titles with Costa leading the line, with the Spaniard scoring 20 times in each of those campaigns.
Antonio Conte was, however, to take the decision to move in a different direction during the summer of 2017, with Costa frozen out and international team-mate Morata drafted in.
The former Blues defender told Sporting Bet: "They will need another striker.
"Morata started well but struggled as he went on, whilst Giroud took his place and played well, but they haven’t replaced Costa since he left.
"The new manager may not see either Morata or Giroud as players who fit the role they want up front, but I definitely think that this is a position that needs to be addressed."
While expecting Chelsea to dip into the summer market, Sinclair fears they may find the going tough.
Failure to secure a top-four finish in 2017-18 has left the club without elite level European competition, which may lead to them missing out on top targets demanding more than the Blues can offer.
"Top players will be expecting to play for teams in the Champions League, and Chelsea will struggle to sign these players now," Sinclair added.
"Chelsea will have to fork out a lot of money to convince a player to sign for them and not a team that qualified for the Champions League."