The under-pressure coach is desperate to spend the money generated from the Virgil van Dijk sale and new forwards are at the top of his list.
As well as another centre-back, Puel is aiming to bolster the club’s options in the final third and he is looking at Theo Walcott and Carrillo.
Walcott’s wages of £140,000 a week is a stumbling block at present and the Saints may need Arsenal to pay some of his wages for the coming months, while
Carillo is also on the radar after falling down the pecking order at Monaco, with Radamel Falcao in fine form.
Pellegrino and Carillo worked together at Estudiantes in his native Argentina and the Saints are now tempted to make a bid as they look to push away from the relegation zone.