It is believed that Bakayoko will join the Italians on loan with an option to join permanently next summer.
They are also set to sign highly-rated Real Madrid midfielder Mateo Kovacic on a season-long loan.
Chelsea winger Willian has confirmed he has no desire to leave the Blues this season after being linked with a move to Jose Mourinho's Manchester United.
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North Korea has in the past expressed anger over comments made by administration officials in the media, especially Bolton.
Bakayoko, 23, joined Chelsea from Monaco last summer, with BBC Sport reporting that the fee was a huge £40million after the Frenchman starred in three seasons with Monaco.
At a press conference, Sarri told reporters: "Now I think the squad is too large".
"It will be interesting whether or not we see one or two Chelsea midfield players go by the end of [the window], you never know".
And he remains unsure if new signing Kepa Arrizabalaga will start in goal at the Kirklees Stadium or if it will be Willy Caballero between the sticks.
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Chicharito added: "The manager called me before the World Cup because he knew my situation was hard at the end of last season, and he made me feel very good".
And Walker said: "I think we set the bar past year".
"We are very happy to welcome Mateo to the Chelsea family".
And Chelsea are keen to offload some fringe players to shrink Maurizio Sarri's squad ahead of their opening game at Huddersfield on Saturday (3pm).
The Blues' pre-season preparations suffered hiccups by the late return of extended vacation to squad members like Gary Cahill, Eden Hazard, Michy Batshuayi, N'Golo Kante and Olivier Giroud who played at the summer World Cup in Russian Federation.
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Say Maryland's Kevin Huerter, for example, didn't get drafted in the first two rounds - he'd be able to play for the Terps again. The latter would become effective if the NBA and its players' association allow high school students to enter the draft.