Borussia Dortmund are this week set to discuss the possibility of Henrikh Mkhitaryan's potential move to Manchester United.
United have reportedly offered £26 million for the Armenian attacking midfielder, with his agent, Mino Raiola, said to be keen to push through the move.
Dortmund chief executive Hans-Joachim Watzke has conceded they could lose their star player if the right conditions are met.
"We will assess his situation this week. We not only need to discuss it with Michael Zorc and Thomas Tuchel, but also with the bodies," Watzke told Kicker.
"It is a difficult decision. There are three perspectives with every transfer: An economic, a strategic and a sporting.
"If the economic side becomes overwhelming it might happen that you make a different decision in the end."