Manchester United are holding various discussions in an attempt to secure more signings before the transfer deadline next week.
Telles, 27, has entered the last year of his Porto contract and his valuation is understood to be a sticking point in negotiations, as Telles can sign a pre-contract deal with any club in January.
Chris Smalling is available for transfer and his potential sale would give United leverage to conclude a quick deal for Telles but they have not received an acceptable offer for Smalling. The 30-year-old is keen to return to Roma, where he spent last season on loan, on a permanent basis.
Smalling and Marcos Rojo are training in a bubble separate from the rest of the United squad at Carrington and manager Ole Gunnar Solskjaer all but confirmed both have asked to leave. United have not had any takers for Rojo, 30, and can release him next year.
The possible arrival of Telles could lead to the departure of Diogo Dalot, who has started once in the Premier League in the last 16 months and was an unused substitute in last week’s Carabao Cup win at Luton Town.
Borussia Dortmund have been adamant for close to two months that Sancho is staying and Bournemouth forward David Brooks, Juventus winger Douglas Costa and Ivan Perisic of Inter Milan have all been considered as alternatives by United. The club has also explored the possibility of signing 18-year-old Atalanta winger Amad Traore.
Sancho, 20, started in Dortmund’s weekend defeat at Augsburg and could figure in their German Cup clash with Bayern Munich on Wednesday as well as the league visit of Freiburg before deadline day.
The MEN revealed United were working on up to three more signings prior to the international transfer deadline on October 5 but are not expected to move for a centre-back until next year, despite the abject form of Victor Lindelof. United have a surfeit of options at centre half and have been unable to shift Smalling, Rojo or the still-injured Phil Jones. Axel Tuanzebe is nearing match fitness and Teden Mengi, 18, has been promoted to the first-team squad.
Andreas Pereira is on the verge of joining Lazio on a season-long loan with an option to making the move permanent. Pereira, 24, has been marginalised at United by the arrival of Bruno Fernandes and return to fitness of Paul Pogba but signed a four-year contract last year, which has proven to be prohibitive to a permanent move.
Sergio Romero has still not returned to training and will be allowed to leave if United receive an agreeable offer for the Argentinian. Romero, 33, is out of contract at the end of the season and United have the option of an additional year.
Jesse Lingard’s camp welcomed speculation linking the United forward with Tottenham but Jose Mourinho had no interest in signing him. Lingard, 27, performed well enough at Luton last week to make the bench for the win at Brighton on Saturday.