Cristiano Ronaldo has already sent Thomas Tuchel £45m transfer message amid Romelu Lukaku worry

Thomas Tuchel would be well advised to carefully analyse Cristiano Ronaldo's spell at Juventus when it comes to making a decision over Chelsea's strikeforce moving forwards.

The Blues are among several Premier League sides who are reportedly in talks to sign Paulo Dybala, with the 28-year-old open to leaving Turin when his contract expires in the summer, according to 90min.

The report claims that Chelsea face competition from Arsenal, Tottenham, Manchester City and Manchester United for the Argentina international's signature.

But while the deal may seem like an exciting one, in theory, Tuchel should consider Dybala's time alongside Ronaldo at Juve as a warning amid the Blues' clear need to improve offensively.

In the 2017/18 campaign, the Argentine directly contributed towards 27 goals in 33 Serie A appearances; the season prior to Ronaldo swapping the Santiago Bernabeu for the Allianz Stadium.

While Dybala played a hand in the Old Lady's eighth successive Scudetto the following season, his output was sacrificed, dropping to seven goals and assists in three fewer games.

Juventus had amended their setup and tactics to accommodate Ronald's arrival, which in turn had a direct impact on the attacking midfielder's own performances.

Dybala, who is valued at £45m by Transfermarkt, soon returned to his best but a series of injuries have hampered his progress in Italy.

Should Chelsea look to formalise any interest in Dybala, then Tuchel must first consider the time required to forge any sort of relationship with Romelu Lukaku, who like Ronaldo is a striker that doesn't participate all too often in general possession.

In Juventus' case, the decision to build around the five-time Ballon d'Or winner was warranted - as Ronaldo was