A lack of scoring at the top of his attack has Chelsea boss Jose Mourinho seeking several options at striker and it appears Atletico Madrid Diego Costa is at the top of the list. Mourinho will get a close look at Costa when Chelsea face Atletico in the semifinals of Champions League.

The attack will almost certainly be adressed in the offseason. For now, Chelsea have concerns in the Premier League with Liverpool and Manchester City involved in the title chase. The Blues lost their grip on the Premier League due to a depleted attack, and yet they remain only two points back of Liverpool on the table.

However, it appears before any attempts are made at landing Costa or even the likes of Paris Saint-Germain’s Edinson Cavani or Monaco’s Radamel Falcao, Mourinho must figure out how where Samuel Eto’o and Eden Hazard might land.

Already under the impression that his first season at Stamford Bridge will likely be his last, reports indicate Eto’o began contract discussions with Turkish club Besiktas as his contract expires at the conclusion of the season, according to Metro.

While Metro’s report indicates Mourinho might not have completely lost faith in the 33-year-old Eto’o’s abilities to lead an attack, the Cameroonian might find Besiktas’s two-year contract offer and the possibility of a future coaching position too tempting to pass up.

Rather than spend heavily on strikers dominating the French and Spanish leagues, Mourinho could instead bring Romelu Lukaku back from his loan to Everton.

However, the 20-year-old is reportedly very happy at Goodison Park, according to Daily Mirror, and he may not be keen to switching back. Lukaku has netted 13 goals and six assists this season, and Everton moved up to fourth place on the table thanks to Saturday’s 1-0 victory over Sunderland.

Lukaku’s presence and production can certainly attribute to Everton’s success this season, and thus Mourinho could permanently sell him off to the Toffees at a high price and flip the extra funds into a Costa or Cavani signing.

In fact, the native Belgian has done far better away from Stamford Bridge. In the last three years, Lukaku’s made 60 appearances and scored 30 goals between West Brom and Everton, compared to 10 appearances and zero goals for Chelsea.

The future of midfielder Hazard is also in doubt, especially if he follows the alleged advice of Belgium boss Marc Wilmot. Though conflicting reports have surfaced, Wilmot may or may not have told Hazard that a move to Paris Saint-Germain might be in order if he hopes to grow as a player, according to Metro.

Whether Hazard takes Wilmot’s advice to heart or not, Mourinho can’t part with both his top goal scorer and playmaker. Hazard leads the Blues with 14 goals and seven assists.

Hazard could fetch as much as £37 million, due to his production, talent and contract not expiring for another three years.