The Blues also have an FA Cup quarter-final with Leicester City to look forward and are still in the Champions League, albeit with a 3-0 deficit to make up on Bayern Munich in their last-16 second leg.
According to certain reports, Dayot Upamecano could be the next big-name arrival at Stamford Bridge as Lampard chases after a new centre-back to partner Antonio Rudiger - a potentially massive coup for the West London outfit.
Amid the ongoing speculation, Sports Mole looks at how Chelsea could line up with Upamecano in their ranks.
However, that would mean leaving out one of his many talented attacking or midfield options, so a back four - with two centre-backs - appears to make more sense.
Rudiger has impressed during his time at the club and is the most likely option to partner Upamecano, who can play either on the right or the left of the pivot.
Azpilicueta has been an impressive servant for the Blues and showed against Aston Villa last week that he still has plenty left to offer, but Reece James is nailed on to be Chelsea's go-to right-back for years to come.
On the opposite flank, Marcos Alonso is in possession of the left-back berth but is another that Lampard is reportedly looking to replace this summer.
New arrivals Werner and Ziyech will add an extra dimension, while Christian Pulisic has stepped up a level since the Premier League returned.
The only other decision for Lampard to make is whether to go with three in midfield of two, though the former would certainly give a better balance to the lineup.